1. Chapter 7 Test Review Board Slide!

2. Test Topics Solving Systems of Equations –G–G–G–Graphing –S–S–S–Substitution (Partial & Complete) –E–E–E–Elimination Two Strange Puppies –0–0–0–0 = # (parallel lines, no solutions) –0–0–0–0 = 0 (same line, infinite solutions) Systems of Inequalities

3. Problem #1: Solve Using Complete Substitution 5x + 4y = 32 9x – y = 33 (4, 3)

4. Problem #2: Solve Using Complete Substitution 5x + 2y = 9 x + y = -3 (5, -8)

5. Problem #3: Solve Using Partial Substitution -5x + 3y = 51 y = 10x - 8 (3, 22)

6. Problem #4: Solve Using Partial Substitution 2x - y = 24 x – 9 = -y (11, -2)

7. Problem #5: Solve Using Elimination 3x + 4y = -1 5x - 7y = -70 (-7, 5)

8. Problem #6: Solve Using Elimination -16x + 2y = -2 y = 8x - 1 Infinite Solutions Because they are the same line

9. Problem #7: Solve Using Elimination -7x + 10y = 11 -8x + 15y = 34 (7, 6)

10. Problem #8: Solve the System of Inequalities x > -2 x > -2 x + 2y < 4