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Answer Key<br />

Test A<br />

1. y 2.<br />

1<br />

The relation is The relation is not<br />

a function. a function.<br />

3. 0 4. 0 5. 3<br />

6. y<br />

7.<br />

y<br />

8. y 9. y 2x 1 10. y x 1<br />

11. y x 1 12. y 2x 3<br />

13. y<br />

14.<br />

y<br />

1<br />

2x 15. y<br />

16.<br />

17. y<br />

18.<br />

(0, 1)<br />

1<br />

19. 2s 4a 2800<br />

1<br />

1<br />

1<br />

2<br />

1<br />

1<br />

1<br />

1<br />

x<br />

x<br />

x<br />

x<br />

x<br />

1<br />

y<br />

1<br />

1<br />

1<br />

1<br />

1<br />

y<br />

1<br />

1<br />

x<br />

x<br />

x<br />

x

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