Linear Grapher Microsoft Excel Spreadsheet that allows you to graph up to 3 lines at a time. The lines are color coded with the equations, so you will know which line corresponds to which equation.
It also displays 10 points for each equation. The x values for these points can be adjusted.
It also finds the points of intersection for every pair of lines. This is helpful for system of equations.
It also has a seperate application built into the spreadsheet for finding the equation of a line