These types of logs can be expressed as: The natural logarithm of a number x (written as ln( x )) is the power to which e would have to be raised to equal x, where e is an irrational number approximately equal to 2. If you are asked to calculate the average rate of change on an interval without a graph, you will have to come up with two points to calculate the slope. On the graph, the center point is indicated with the mouse until the point is chosen with a mouse click. 4 R E A L L I F E Logarithmic Functions EVALUATING LOGARITHMIC FUNCTIONS. Calculate The Activation energy and pre exponential factor? versus x=1/T you get a straight line with slope -(Ea/R) an y-axis intercept ln(A). Enter any Number into this free calculator. The exponent for exponential growth is always positive and greater than 1. And XLeratorDB makes it simple and efficient to do these calculations right on the database, where your data is. Therefore, I've created three different lessons to help you gain a full understanding. On the Data tab, in the Analysis group, click Data. This slope calculator takes two points and then uses the slope formula to calculate the slope of a line defined by those two points, and then the y intercept. In practice, this means substituting the points for y and x in the equation y = ab x. So, calculating the. From simplify exponential expressions calculator to division, we have got every aspect covered. If ever you actually have advice with algebra and in particular with exponential form calculator or worksheet come pay a visit to us at Factoring-polynomials. This function takes the number x and uses it as the exponent of e. 10 2 =10 6. For example, it can't tell you that the derivative of x 2 is 2x. You just have to keep track of what you know and what you are after. The calculator will not fit the increasing model involving exponential decay directly. For example, enter 3x+2=14 into the text box to get a step-by-step explanation of how to solve 3x+2=14. Slope intercept form Learn how to find the slope intercept form. If you are entering the integral from a mobile phone, you can also use ** instead of ^ for exponents. Learn how to calculate the exponential moving average in Excel and VBA, and get a free web-connected spreadsheet. Thus, the exponential regression curve is not the best-fit curve in the "strict" sense. More than 70 powerful online math calculators designed to help you solve all of your math problems. What is Slope? Slope is a concept in geometry that describes the direction and steepness of a line on a Cartesian plane. The notation for a gradient is m. 19 Degrees and radians 23. A Different Look at Linear Functions ~Teacher Notes. Introduction exponential functions calculator: Exponential function has the form of f(x) = b x for a permanent base b which can be any positive real number. In the function f(x) = a b^x, what is the significance of the value of a in the graph? When the function is increasing from left to right, what do you notice. This calculator is intended solely for general information and educational purposes. Free graphing calculator instantly graphs your math problems. Really, this just means we have a number greater than 1 getting raised to the x. Trace a graph online or use the Scientific Calculator to calculate any mathematical expression. Why you should learn it GOAL 2 GOAL 1 What you should learn 8. In Figure 4, the slew rate parameter (P2) is used to measure the slope of the math function. Finding an Exponential Model Use a graphing calculator to fi nd an exponential model for the data in Example 3. For any positive number a>0, there is a function f : R ! (0,1)called an exponential function that is deﬁned as f(x)=ax. If you have two points, for example, (2, 6) and (3, 18), how do you find the equation if you know its exponential? I've heard about y=ab^x but I'm not sure what those variables represent. Objective 1: Students will be able to make an accurate sketch of vertically shifted and/or reflected exponential functions, and to identify the equation of a base two exponential function from its graph. This was admittedly a stupid question. The exponent for decay is always between 0 and 1. For y = brx the slope is rlog(b). For each type of trend line, I will present the coefficients, the equation to calculate each coefficient and then the calculated value based on the following data set:. As discussed in exponential theory the rate (q2) at time (t2) is related to the rate (q1) a time (t1) by: (1) In practice, especially when rates are being calculated by hand (or calculator) and knowing that exponential decline is a constant percentage decline, some people like to calculate the rate. The name of this book is Al-Jabr wa'l muqabalah. The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept. For this exponential equation, we expect a negative slope/average rate of change, because the negative sign in the exponent indicates we have an exponential decay curve. Population growth, inﬂation, and radioactive decay are but a few examples of the various phenomenon that exponential functions can be used to. These are the same rules discussed for transforming quadratic graphs, they just look a little different when applied to exponential functions. You will get your two points by taking the bounds of your interval and substitute those x-values into your equation to find the y-values. For example, in a linear model for a biology experiment, interpret a slope of 1. If you know two points that fall on a particular exponential curve, you can define the curve by solving the general exponential function using those points. You can use the model to gain evidence that that the model is valid by seeing whether the predictions obtained match with data for which you already know the correct values. The Mathematics Power Calculator is capable of raising any number to a power. ln(x) calculator. However, by the nature of exponential functions, their points tend either to be very close to one fixed value or else to be too large to be conveniently graphed. Hello, I am wondering if it is possible to calculate the slope in excel with a fixed y intercept? I know that if I construct a scatter plot I can insert a trend line which I can format to have a fixed y intercept and I can then display the equation on the graph. No Download or Signup. A least-squares regression fit of the data (using base 10 logarithms to transform columns (1) and (6)) indicates that the estimated slope for the Weibull distribution is 1. Here, for instance, the slope of y = 1 is zero. A line that slopes down from left to right has a negative gradient. From my answer to How can someone explain exponential functions to a high school kid?: An exponential function or curve is a function that grows exponentially, or grows at an increasingly larger rate as you pick larger values of x, and usually tak. 5 cm in mature plant height. This example teaches you how to apply exponential smoothing to a time series in Excel. This test will be paper-based this year. 6 Using the line y – x as a reference, generalize the effect of changes in the equation on the graph of the line. The slope is the vertical distance divided by the horizontal distance between any two points on the line, which is the rate of change along the regression line. The calculator will not fit the increasing model involving exponential decay directly. And XLeratorDB makes it simple and efficient to do these calculations right on the database, where your data is. But sometimes, you will need to do exponential calculation to a range of cells, how can you apply exponential calculation in Excel?. This work describes a library of shape functions and singly differential cross sections of bremsstrahlung due to interaction of the electrons with energies from 10 eV. The equation for the model is A = A 0 b t (where b > 1 ) or A = A 0 e kt (where k is a positive number representing the rate of growth). com and understand linear systems, solving linear equations and a wide range of additional algebra subject areas. An example where an exponential regression is often utilized is when relating the concentration of a substance (the response) to elapsed time (the predictor). Looking for a guide on how to figure out the slope of a line in basic algebra? From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. On the Data tab, in the Analysis group, click Data. In a nutshell, the slope of any line is the change in the y-values versus the change in the x-values. The online Exponential Decay Calculator is used to solve exponential decay problems. Assuming its growth is exponential, what is this population's doubling time? This island has a 14% growth rate over 20 years. For a linear function, the rate of change of y relative to x is always constant, i. Textbook solution for Calculus: An Applied Approach (MindTap Course List)… 10th Edition Ron Larson Chapter 4. The spreadsheet retrieves stock data from Yahoo Finance, calculates EMA (over your chosen time window) and plots the results. Slope is the change in y divided by the change in x. Exponential decay models of this form will increase very rapidly at first, and then level off to become asymptotic to the upper limit. They can, also, generate a step by step explanation at the click of a button. When = 3, the. Enter each data point as a separate line. 7 Modeling with Exponential and Logarithmic Functions 345 Using Technology You can use technology to fi nd best-fi t models for exponential and logarithmic data. Calculate the approximate grading scale for a normal grade curve with this Grade Curve Calculator. Get the free "Regression Calculator" widget for your website, blog, Wordpress, Blogger, or iGoogle. The name of this book is Al-Jabr wa'l muqabalah. An online calculator and solver for simple exponential equations. exponential function, just as the slope of a line did with tables of points on a linear function. First go to the Algebra Calculator main page. The slope and one point specify a straight line. Thus, the exponential trendline equation gives you the slope of the transformed data automatically. In the industry, commercial software programs are used with extensive database capabilities to quickly develop forecasts. For the scatter plot to be displayed the number of x-values must equal the number of y-values. Once you get into advanced algebra and beyond, it can be difficult or time consuming to do mathematical calculations by hand. An exponential function where a > 0 and 0 < b < 1 represents an exponential decay and the graph of an exponential decay function falls from left to right. Well since I'm. If you are entering the integral from a mobile phone, you can also use ** instead of ^ for exponents. Finding the Inverse of an Exponential Function. Simple linear regression is a way to describe a relationship between two variables through an equation of a straight line, called line of best fit, that most closely models this relationship. For example, enter 3x+2=14 into the text box to get a step-by-step explanation of how to solve 3x+2=14. Using the LINEST function or LOGEST function You can use the LINEST or LOGEST function to calculate a straight line or exponential curve from existing data. Specifically, (In the figure shown, x = -1 and h = 3, so (x+h/2) = +1/2. 6% changes to. Special Slopes. The slope is d(ln(a) + bx)/dx = b The derivative of the transformed line is b. It uses "well known" rules such as the linearity of the derivative, product rule, power rule, chain rule, so on. In each portion, no-calculator and calculator, you’ll first. Using the regression equation to calculate slope and intercept ; Using the R-squared coefficient calculation to estimate fit; Introduction. On the graph, the center point is indicated with the mouse until the point is chosen with a mouse click. A linear trendline is the straight line that most closely approximates the data in the chart. new forecast. x(t) is the value at time t. Whereas in the simple moving average the past observations are weighted equally, exponential functions are used to assign exponentially decreasing weights over time. Students learn about four forms of equations: direct variation, slope-intercept form, standard form and point-slope form. By default commas are considered column separators; in the case you are using them as decimal separators check the option below. Given two points, this slope calculator will compute the slope and the slope-intercept form of the line. Virginia Department of Education 2007, revised 12/2011 6 6. Which of the following is not a technique used to determine forecasting accuracy? 35. The slope intercept form calculator will teach you how to find the equation of a line from any two points that this line passes through. Using the Slope Calculator. We first isolate the exponential part by dividing both sides of the equation by 200. Note that all the x values on this graph are 5. In practice, this means substituting the points for y and x in the equation y = ab x. So, calculating the. If you know two points that a line passes through, this page will show you how to find the equation of the line. Then we will move on to graphing slope and finally to using slope intercept form to create your graph. Change the a, b values in this exponential function to see the calculations of properties of exponential function. f(x) = a x. P3 is set up using parameter math to take the reciprocal of P2; this is the time constant of the original exponential 1. Square root button is used to calculate the square root of a number. The Derivative Calculator has to detect these cases and insert the multiplication sign. A polynomial of degree n is a function of the form. Discover how exponential functions, in which a variable appears in the exponent, are used to model real-world situations. Exponential regression is probably one of the simplest nonlinear regression models. The square root of a number x is the same as x raised to the 0. “cost per topping”). But if you're taking the idea literally, you don't need an exponential growth calculator; you can calculate rates of growth yourself, as long as you know some basic information concerning the population or object in question. The probability plot for 100 normalized random exponential observations ($$\lambda$$ = 0. The slope is d(ln(a) + bx)/dx = b The derivative of the transformed line is b. Thus, x 5 /x 2 =x 3. Know and apply the properties of integer exponents to generate equivalent numerical expressions. When dividing terms with the same base, the exponents should be subtracted. If you need support with math and in particular with letter algebra calculator or linear algebra come visit us at Sofsource. Graphing calculators make is easy to work with exponents and functions. Exponential functions 1. r is the growth rate when r>0 or decay rate when r<0, in percent. y = ab (linear function of x) + c. For example, it can't tell you that the derivative of x 2 is 2x. Re: Calculation for logarithmic slope It's a least-squares regression of y onto LN(x). 10(y) appears linear and the slope is n. Note: The above equation is only valid for the exponential equations. Using the Slope Calculator. The spreadsheet retrieves stock data from Yahoo Finance, calculates EMA (over your chosen time window) and plots the results. • The plot of x versus log 10(y) appears concave downward. R exponential regression. The full calculation is always as follows:. For example, f(x)=3x is an exponential function, and g(x)=(4 17) x is an exponential function. This calculator is intended solely for general information and educational purposes. if n and a are positive real numbers, and a is not equal to 1, then If a x = n, then log a n = x. The exponential functions we'll deal with here are functions of the form. From Fraction Inequalities Calculator to powers, we have everything covered. Once you get into advanced algebra and beyond, it can be difficult or time consuming to do mathematical calculations by hand. is the same no matter which values x is. A scatter plot (or scatter diagram) is a two-dimensional graphical representation of a set of data. As their names suggest both exponential function and logarithmic function are two special functions. com, a free online graphing calculator. Exponents are used in Computer Game Physics, pH and Richter Measuring Scales, Science, Engineering, Economics, Accounting, Finance, and many other disciplines. It is thus the average of the 125 day and 250 day adjusted slope values. The LINEST function and LOGEST function return various regression statistics, including the slope and intercept of the best-fit line. Here -5 is called the negative exponent. Note: There is no credit or certificate of completion available for the completion of these courses. Spreadsheet users often need to calculate the slope of a line related to the data in their spreadsheet. L1 and L2 are the 2 ND function keys of the 1 and 2 keys. This is the equation for the relation between half-life, mean lifetime and the decay. The calculator needs to know which two sets of data to use in order to find the trend line. If the derivative is difficult to do by hand, consider using a calculator or computer algebra system to find the derivative. In the example the uncertainty in the slope is 0. Returns the slope of the linear regression line through data points in known_y's and known_x's. The exponential functions we'll deal with here are functions of the form. It is a good exercise to compare the two, and to check that, in all cases and over the whole curve, that the red line represents the slope of the purple one. More about this Polynomial Regression Calculator so you can have a deeper perspective of the results that will be provided by this calculator. At the beginning of the exponential phase, all reagents are still in excess. No Download or Signup. Derivatives and differential equations. org web site, there are many "stand-alone" web pages that are each designed to perform only a single test or calculation. Exponents may not currently be placed on numbers, brackets, or parentheses. That means, we can use the following formula: m = (y 2 – y 1)/(x 2 – x 1). Slope intercept form Learn how to find the slope intercept form. But before you take a look at the worked examples, I suggest that you review the suggested steps below first in order to have a good grasp of the general procedure. This template can be used any time you have students calculate slope - helping them to see that "rise over run" is just a simple arithmetic calculation. No matter how hard it is to get when you write any pattern and it does not still help you find the slope between two lines. we notice that g = e b. The exponential distribution is the model for the useful life period, signifying that random failures are occurring. Free slope calculator - find the slope of a line given two points, a function or the intercept step-by-step. If you know two points that fall on a particular exponential curve, you can define the curve by solving the general exponential function using those points. Exponential Growth Calculator, Exponential Growth Problems. Google Charts supports three types of trendlines: linear, polynomial, and exponential. When = 1, the Weibull distribution models the exponential distribution. For exponential growth: when a population is small, it increases slowly; when a population is large, it increases quickly; The relative growth rate will make this observation mathematically precise. Thus, the exponential trendline equation gives you the slope of the transformed data automatically. What is simple linear regression. Then, use the Equation of a Line Maker to check each of your answers. Furthermore, the slope of this line is b, the value of the constant in the original exponential equation. "Same slope" and "parallel. Calculate The Activation energy and pre exponential factor? versus x=1/T you get a straight line with slope -(Ea/R) an y-axis intercept ln(A). If you are interested in reviewing the graphs of exponential functions, examples and problems, click on Exponential. Online Ti 83 calculator which calculates the total numbers, intercept and the slope value by entering the x and y values. Graphing Logarithmic Functions Using Their Inverses. First go to the Algebra Calculator main page. Exponential smoothing is a way to smooth out data for presentations or to make forecasts. That means, we can use the following formula: m = (y 2 – y 1)/(x 2 – x 1). Slope intercept form Learn how to find the slope intercept form. Both exponential growth and decay involve a rapid change in numbers. First, we borrow some Calculus results: The derivative of a function gives the slopes of the tangent lines to the graph of. For example, the diagonal line shown to the right goes through points (–3, –4) and (1, 4) and has a slope of 2. We maintain a good deal of good quality reference materials on matters ranging from matrix operations to adding and subtracting polynomials. These properties are the reason it is an important function in mathematics. This is the parameter , which is the value of the slope. The coefficient of the term with the highest degree (greatest power of x) is called the leading coeficient and cannot equal 0. More about this Polynomial Regression Calculator so you can have a deeper perspective of the results that will be provided by this calculator. This is a good example of where a slope field can be slightly misleading. Exponential Growth. In general, the exponential decline is the most commonly used method. Well you know that having a 0 in the denominator is a big no, no. When try such calculations on your own, use this exponential distribution calculator to verify your results. It is deliberately designed to be intuitive and very simple to use, and it is closely integrated with the SlopeCharts platform. 065, which is as we hypothesized, βH*A > 1. Each x/y variable is represented on the graph as a dot or a. We have step-by-step solutions for your textbooks written by Bartleby experts!. SlopeRules is a feature in SlopeCharts which lets you create a trading system using discrete technical rules for entering and exiting positions. Your goal is to find the change in the height of the line over the horizontal distance of the line. → Read More: Max/Min Problem – Maximizing Revenue, Selling Calculators. Finding an Exponential Model Use a graphing calculator to fi nd an exponential model for the data in Example 3. us and select STAAR resources. Show Instructions In general, you can skip the multiplication sign, so 5x is equivalent to 5*x. For each type of trend line, I will present the coefficients, the equation to calculate each coefficient and then the calculated value based on the following data set:. Slope alone cannot be used to participate in an ongoing trend, but it can be used with other indicators to identify potential entry points. Online algebra video lessons to help students with the formulas, equations and calculator use, to improve their math problem solving skills to get them to the answers of their Algebra 2 homework and worksheets. M stands for slope. If you create many random samples that are normally distributed and for each sample you calculate a prediction interval for the y value corresponding to some set of x values, then about 95% of those intervals will contain the true y value. Calculate the slope of secants lines through the following points where 1) q1=30 and q2= 29. Free exponential equation calculator - solve exponential equations step-by-step. Compound interest is the concept of earning interest on your investment, then earning interest on your investment plus the interest. 6% changes to. Some basic information about the Slope Calculator. For the rest of the examples below, there are no built-in formulas. The use of this domain and range calculator will also ensure that you've found the correct answer. This is an exponential growth curve, where the y-value increases and the slope of the curve increases as x increases. Recording the values of an exponential function with additively increasing x-values allows you to see the connections between exponential functions and geometric sequences. First, let’s talk about the slope. This work describes a library of shape functions and singly differential cross sections of bremsstrahlung due to interaction of the electrons with energies from 10 eV. It's usually used for finance and economics. We maintain a great deal of great reference material on subjects ranging from two variables to decimals. Calculate The Activation energy and pre exponential factor? versus x=1/T you get a straight line with slope -(Ea/R) an y-axis intercept ln(A). Introduction exponential functions calculator: Exponential function has the form of f(x) = b x for a permanent base b which can be any positive real number. Type your algebra problem into the text box. Besides the calculator is apt of carrying out simple calculations with numbers. Compound interest is the concept of earning interest on your investment, then earning interest on your investment plus the interest. Any lowercase letter may be used as a variable. Exponential Regression An exponential regression is the process of finding the equation of the exponential function that fits best for a set of data. Recording the values of an exponential function with additively increasing x-values allows you to see the connections between exponential functions and geometric sequences. A specialty in mathematical expressions is that the multiplication sign can be left out sometimes, for example we write "5x" instead of "5*x". Then use the slope formula to calculate the slope. r is the growth rate when r>0 or decay rate when r<0, in percent. Come to Emaths. So, you need to press: Not only would we like the calculator to find a trend line for us, we want to graph that. The slope can be computed as the change in price divided by the change in quantity demanded between the two pairs. Slope alone cannot be used to participate in an ongoing trend, but it can be used with other indicators to identify potential entry points. In Figure 4, the slew rate parameter (P2) is used to measure the slope of the math function. Use this calculator only to check your answers. Let's assume that we want to calculate today's 200 day Exponential Moving Average for a share or stock which has a previous day's EMA of 120 pence (or cents) and a current day's closing price of 136 pence. Comment/Request Good practice for students learning about computer output too, it's important to learn that not everything is hand-delivered in a nice equation; coefficients are often given in tables when technology does the work. The exponential function extends to an entire function on the complex plane. Finding an Exponential Model Use a graphing calculator to fi nd an exponential model for the data in Example 3. Find the instantaneous rate of change in Revenue R = −+20 4qq2 at q = 30 where q is the quantity of items sold. 8 shows some solutions superimposed on the slope field. For this exponential equation, we expect a negative slope/average rate of change, because the negative sign in the exponent indicates we have an exponential decay curve. Come to Algebra1help. Using Exponential Regression Use a graphing calculator to find an exponential model for the data in Example2. Like the other exponential models, if you know upper limit, then the rest of the model is fairly easy to complete. Let's assume that we want to calculate today's 200 day Exponential Moving Average for a share or stock which has a previous day's EMA of 120 pence (or cents) and a current day's closing price of 136 pence. Free exponential equation calculator - solve exponential equations step-by-step. The slope of an exponential function changes throughout the graph of the functionyou can get an EQUATION of the slope of the function by taking the first DERIVATIVE of the exponential function (dx/dy) if you know basic Differential equations/calculus. The exponential function satisfies an interesting and important property in differential calculus, =, This means that the slope of the exponential function is the exponential function itself, and subsequently this means it has a slope of 1 at =. This sort of equation represents what we call "exponential growth" or "exponential decay. No Download or Signup. Conversion problems (metric) and exponential functions. You find the value of b by calculating the slope in the usual way. ln[N t] = ln[N 0] + rt. For a linear function, the rate of change of y relative to x is always constant, i. The coefficient of the term with the highest degree (greatest power of x) is called the leading coeficient and cannot equal 0. Undefined slope A thorough explanation of what it means for a slope to be undefined. Specifically, (In the figure shown, x = -1 and h = 3, so (x+h/2) = +1/2. For each type of trend line, I will present the coefficients, the equation to calculate each coefficient and then the calculated value based on the following data set:. In order to use the Slope Intercept Form Calculator on the top of the page, you just need to add the coordinates of the two points that you already know. Use the following rules to enter expressions into the calculator. Exponential. Each x/y variable is represented on the graph as a dot or a. Enter the input number x and press the = button:. How to find the slope Learn how to compute the slope using the rise and the run or 2 points. Above all, the calculator is designed to identify forbidden numbers as well. In the example the uncertainty in the slope is 0. This paper provides an overview of the design of thread reinforced soil structures with a particular emphasis on the influence of the strength criterion. Y-axis intercept. More Examples Here are more examples of how to graph equations in. Exponents are supported on variables using the ^ (caret) symbol. Well you know that having a 0 in the denominator is a big no, no. R exponential regression. You can then annualize it as needed. On the Data tab, in the Analysis group, click Data. A model for growth of a quantity for which the rate of growth is directly proportional to the amount present. An equation for an exponential curve is of the form y = a(b) x. The online Exponential Growth Calculator is used to solve exponential growth problems. The "exp" stands for "exponential". This example teaches you how to apply exponential smoothing to a time series in Excel. Use the following rules to enter expressions into the calculator. Exponential Graphing Calculator. EXAMPLE 1: a) is a polynomial of degree 4 with leading. Some examples are population, compound interest and charge in a capacitor. In general, the exponential decline is the most commonly used method. 98) and (6, 481. The equation for the model is A = A 0 b t (where b > 1 ) or A = A 0 e kt (where k is a positive number representing the rate of growth). Both exponential growth and decay involve a rapid change in numbers. Earth Curve Calculator. Graphing a linear function gives you a line; whereas graphing an exponential function, gives you a curve. Free Exponents & Radicals calculator - Apply exponent and radicals rules to multiply divide and simplify exponents and radicals step-by-step. First go to the Algebra Calculator main page. Exponential moving average slope is also easier to determine: the slope is always down when price closes below the moving average and always up when price is above. We first isolate the exponential part by dividing both sides of the equation by 200. The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept. Exponential Growth/Decay Calculator. The slope and one point specify a straight line. Tangent Lines and Logarithmic / Exponential Functions Add Remove This content was COPIED from BrainMass. First, we borrow some Calculus results: The derivative of a function gives the slopes of the tangent lines to the graph of. The decimal will be moved to the right 9 places. All calculators have simple and easy-to-use interface. Tan Chapter 1. Free slope calculator - find the slope of a line given two points, a function or the intercept step-by-step. x(t) = x 0 × (1 + r) t. This test will be paper-based this year. Google Charts supports three types of trendlines: linear, polynomial, and exponential. What was the bacteria population at the beginning of the experiment (five hours ago. Polynomial Regression Calculator. ln[N t] = ln[N 0] + rt. The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept. In the below two point slope form calculator, enter the X and Y coordinate values to find the straight line equation. How to Graph the Equation in Algebra Calculator. The graph of an exponential function is a curve with a non-constant slope. Finding slope from a graph Finding slope from two points Finding slope from an equation Graphing lines using slope-intercept form Graphing lines using standard form Writing linear equations Graphing absolute value equations Graphing linear inequalities. Slope formula is used to calculate slope. As you say the slope is r and the intercept is N. Linear functions are graphically represented by lines and symbolically written in slope-intercept form as, y = mx + b, where m is the slope of the line, and b is the y-intercept. The Weibull parameter (beta) is the slope. Visit Mathway on the web. Gowher, The exponential regression model presupposes that this model is valid for your situation (based on theory or past experience).