Solving Systems of Equations By Substitution Get out your notes and your Purple Sheet and get ready for a Warm-Up!

Warm-Up Solve the following systems by substitution −7𝑥+4𝑦=−18 −4𝑥+5𝑦=10 𝑦=6 𝑦=3𝑥+13

Solve the System by Substitution 𝑥+3𝑦=−1 2𝑥+6𝑦=−2 Special Case Example 1 Solve the System by Substitution 𝑥+3𝑦=−1 2𝑥+6𝑦=−2

Solve the System by Substitution 6𝑥−2𝑦=−5 −3𝑥+𝑦=−1 Special Case Example 2 Solve the System by Substitution 6𝑥−2𝑦=−5 −3𝑥+𝑦=−1

Activity Solve the system of equations and find the letter that goes with your answer at the bottom of the back of the page. Draw the shape next to the problem in the box with that letter. Once you finish all the problems, it will make a complete picture. Not all the answers and letters will be used.

Solve the System of Equations by Substitution 7𝑥−𝑦=−13 5𝑥+𝑦=−23 Closure Solve the System of Equations by Substitution 7𝑥−𝑦=−13 5𝑥+𝑦=−23