Therefore the rise is the change in y y Dy D y. Give the slope of the regression line and interpret the slope as a rate. All you need to do is to calculate the difference in the y coordinates of the 2 points and divide that by the difference of the x coordinates of the points rise over run.
To find the slope you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.
In excel words divide E8 by F8 In cell A13 write this formula. Determine if the slope if positive increasing or negative decreasing Step Two. To find the slope you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points. The slope will be the same for a straight line no matter which two points you pick as you know.