How to Estimate the Y Intercept in Excel. When you graph a series of (x,y) coordinates in Microsoft Excel 2010, you can use the program's built-in functions to display the equation for the line ...

Watch this video to find out how the equation 𝑦 = 𝑚𝑥 + 𝑐 can be used to work out the gradient and 𝑦-intercept on a straight line graph.