Straight Line Plotter and Gradient Calculator

A straight line plotter and gradient calculator is now available. The straight line plotter will plot a line for you if you enter the gradient (m) and the y-intercept (c). The range of the graph is from x = -10 to x = 10.

The gradient calculator will calculate for you the gradient of two points on a line. You need to enter the two coordinates (x1,y1) and (x2,y2). The graph will show you the two points and the line. Also the equation of the line will be formulated for you. However the gradient calculator will not work for vertical lines. Do you know why?

Download the excel file here. Open the file. Click on Enable macros. Else go to Tools -> Macro -> Security -> Medium. Restart Excel and open the file again.