2. Martin-Gay, Beginning Algebra, 5ed 22 Location of NewportD1 Location of GatlinburgC2 Location of RobbinsvilleA5

3. Martin-Gay, Beginning Algebra, 5ed 33

4. 44

5. 55

6. 66

7. 77

8. 88

9. 99 Determine whether (3, – 2) is a solution of 2x + 5y = – 4. Let x = 3 and y = – 2 in the equation. 2x + 5y = – 4 2(3) + 5( – 2) = – 4 Replace x with 3 and y with –2. 6 + ( – 10) = – 4 Simplify. – 4 = – 4 True So (3, – 2) is a solution of 2x + 5y = – 4 Example:

10. Martin-Gay, Beginning Algebra, 5ed 10 Determine whether ( – 1, 6) is a solution of 3x – y = 5. Let x = – 1 and y = 6 in the equation. 3x – y = 5 3( – 1) – 6 = 5 Replace x with – 1 and y with 6. – 3 – 6 = 5 Simplify. – 9 = 5 False So ( – 1, 6) is not a solution of 3x – y = 5 Example:

11. Martin-Gay, Beginning Algebra, 5ed 11

12. Martin-Gay, Beginning Algebra, 5ed 12

13. Martin-Gay, Beginning Algebra, 5ed 13