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Graphs of Cubic and Quartic Functions

Answers to pre-test
1. Function has three zeros. They are x = 1, x = 3, and x = -2

2. Function has three zeros. They are x = 1, x = 3, and x = -2

3. Function has three zeros. They are x = -4 and a double zero at x = 1

4. Function has three zeros. They are a triple root at x = 2.

5. Function has three zeros. They are x = -1 and a double root at x = -2.

6. Function has three zeros. They are x = - 3 , x = - 1 , x = 1.

7. Function has four zeros. They are x = -3 , x = -2 , x = 1 , x = 4

8. Function has four zeros. They are x = -3 , x = -2 , x = 1 , x = 4

9. Function has four zeros. They are x = 1 , x = 4, and a double root at x = -2

10. Function has four zeros. They are x = 4 and a triple root at x = - 2

11. Function has four zeros. It is a quartic root at x = - 2.

12. Function has four zeros. They are x = - 3 , x = - 2 , x = 2 , x = 3