Non-Square System

A topic that most people in my class are shaky one is the non-square sytem. In non-square systems, there are more variables to solve for than there are equations that are given. For example, there might be three variables including x, y, and z, while there is only two equations. This means that we have to solve the variables in terms of Z or another common variable, but in this class, we will use Z. Therefore, in this scenario, x and y will both equal some form of Z (for example, y=5z and x=z+7). Then you will put the answer in terms of "a" instead of z. In this step, you will just replace z with "a" in the answer. 

Below, is an example Miss V did for review for a non-square system: in this scenario, there was two equations with 3 variables present.