To show how you solve a linear system using the substitution method, as opposed to the graphing method I did earlier.
Cover image: http://www.flickr.com/photos/stonkinja/2914788579/ by: Jadranka
The substitution method is a really useful way to solve a linear system, and it's definitely a concept that carries over into later math. It will make you a linear system pro after you combine that with the other methods for solving a linear system. So this packet goes over what the substitution method is and how to use it.