Math Graphs
Houghton Mifflin: Math Graphs: Elimination Method 10 [Pdf]
The exercise has learners identify the graphs of two linear equations and then solve the system of equations using the elimination method. The practice problem is available in PDF format.
ClassFlow
Class Flow: Applications of Linear Systems
[Free Registration/Login Required] Students will learn how to use the best method to solve a system of linear equations and will use systems of linear equations to model real-life problems.