A graphical solution for a system of equation means drawing the equations as graphs and determining the - and -values where the graphs intersect each other. Let us say that you have the following system of equations: You need to find the pair of - and -values that solve both equations at the same time. This occurs where the lines intercept each other.
You can either draw the functions by hand or by using a graphing calculator.
Often, it is practical to use a calculator to work with graphic solutions.