Guide: Quiz 1 systems of equations with substitution

This is a review guide for those of you that I requested to take Quiz 1. The original quiz was announced in 12/14, and I asked that you complete the canvas assignment and upload work. I still will expect the same thing when you take the quiz on monday.

A review of systems of equations would be great for those that feel this concept is rusty. I attached a relevant khan academy link here:

https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-systems-topic/cc-8th-systems-with-substitution/v/the-substitution-method 

Here is also the direct link to our lesson we did back in December:

https://rentonschools.zoom.us/rec/share/lbdGhtZcBtQmzPS3GFHEew-4LAd0IIxiDXyhmzeaARIDbd-WLTx42O4rKRA7YZCk.jA9snhV-0_pQlISU 

Please also have a calculator handy.