Solving Linear Systems Using Substitution

This video is an introduction to using substitution to solve systems of linear equations in two variables. It works through three examples and compares using substitution with graphing. It also emphasizes the advantages of using substitution when one variable is easy to isolate (a coefficient of 1 or -1).

Example 1 - 1:09
Example 2 - 4:23
Example 3 - 8:10