After this lesson, you will be able to use the substitution method to write the solution for a system of linear equations.

The lesson begins with a review of how to use the graph of two lines to find a solution to a system of linear equations. It then outlines a strategy for using algebraic substitution to solve systems of linear equations, without graphing.

Learn how to solve system of linear equations with substitution by helping Valdimar get his ax back!

This video includes key concepts, notation, and vocabulary such as: system of equations (a set of equations which occurs simultaneously), linear equation (an equation between two variables that gives a straight line when graphed), and substitution method (a method used to solve a system of linear equations).

Before watching this video, you should already be familiar with estimating the solution to a system of equations by finding the point of intersection on a graph.

After watching this video, you will be prepared to learn more about using algebra to solve systems of equations.

Common Core Standard(s) in focus: 8.EE.B.5, 8.EE.C.8

A video intended for math students in the 8th grade

Recommended for students who are 13 - 14 years old