To solve a system of equations by substitution, solve one of the equations for one of the variables, and substitute this expression into the other...

To solve a system of equations by graphing, graph both equations on the same set of axes and find the points at which the graphs intersect. Those p...

There are several methods for solving a system of equations, including substitution, elimination, and graphing.

A system of linear equations is a system of equations in which all the equations are linear and in the form ax + by = c, where a, b, and c are cons...