This week of math we learned about how to do substitution.

Substitution in a method to find where the two lines intercept.  Substitution is actually really simple to do. Fist you want to get a variable by its self so the equation looks like y= or  x=. Then you plug in what the x or y is. And after you done that you will get one of the answer of the variable. To find the other variable, you plug in the answer you got then you verify the answer.