1. Today in Algebra 2 Get a calculator. Go over homework Notes: –Solving Systems of Equations using Elimination Homework

2. Systems of Equations: Elimination 5x + 2y = 16 4x – 4y = 38 10x + 4y = 32 4x – 4y = 38 14x = 70 x = 5 5(5) + 2y = 16 25 + 2y = 16 2y = -9 y = -4.5 (5, –4.5)

3. Example 2 3x – 12y = 27 x – 2y = -7 3x – 12y = 27 3x – 6y = -21 - 6y = 48 y = –8 3x – 12(-8) =27 3x + 96 = 27 3x = -69 (–23, –8)

4. Example 3 4y – x = 5 22y – 4x = 68 -6y = -48 y = 8 4(8) – x = 5 32 – x = 5 -x = -27 x = 27 (27, 8)