Put each equation into the form Bell Ringer Put each equation into the form y = mx + B 1. 3x + y = 9 2. -2x + y = 17 3. ½X + y = 3 4. X + ½y = 4

Announcements May 8 – Math Placement Test May 8 – Last Day to turn in Late Work Tuesday, may 5 – quiz over solving systems of equations by graphing Last Homework sheet you will get – Keep up with it!!

Finish Class Work You have 10 minutes!!

Check Class Work y = 2x and y = x + 3 y = -3x and y = -2x - 2

Check Class Work 6. ½ y = 4x – 6 and ¼ y = 2x - 3

Section 8.10 Solving Systems of Equations Substitution R drive > Key > May 4_8 > 5_4__8.10 Systems Substitution File > Save As > R drive > Math > May 4_8 > 5_4__8.10 Systems Substitution

Example 1 Solve by Substitution Solve each system of equations by substitution. y = x + 2 y = 5

Example 2 Solve by Substitution Solve each system of equations by substitution. y = 5 y = x + 4

Example 3 Solve by Substitution Solve each system of equations by substitution. y = 7 - x x = 3

Example 4 Solve by substitution Solve each system of equations by graphing. y = 7 y = 2x - 5

Homework Section 8.10 #5-7, 16-21