Chapter 7 Review

I wasn't here all week so I just decided to make a review for chapter 7! So here it goes.

a) Substitution- substitute back into original equation
b) Elimination- eliminate until you are left with 1 variable that you can plug in
c) Break-Even Problems- memorize equations

d) Partial Decomposition- start with bottom and seperate then follow 7 steps 
e) Systems of 3 Equations- same as elimination keep plugging until you isolate 1 variable 
f) Linear Programming- know the signs of each graph.

Here are picture examples of each one.

Substitution

Elimination

Break even 

Partial Decomposition