Extra Practice

Write a verbal description for y = - (x + 1)² + 9

Click on the blanks to reveal the answers.

1. Roots at x = Interactive button. Assistance may be required. _____ - 4 and x = Interactive button. Assistance may be required. _____ 2
2. What kind of numbers are the zeros? Interactive button. Assistance may be required. _______________ real rational
                                                      (real, rational, irrational, imaginary)
3. y-intercept at Interactive button. Assistance may be required. __________ (0, 8)
4. Vertex at Interactive button. Assistance may be required. __________ (- 1, 9) and axis of symmetry Interactive button. Assistance may be required. __________ x = - 1
5. The parabola opens Interactive button. Assistance may be required. _______________ down and has a Interactive button. Assistance may be required. _______________ maximum .
                                               (up, down)                              (minimum, maximum)
6. The parabola Interactive button. Assistance may be required. _______________ increases for Interactive button. Assistance may be required. __________ x < - 1 and Interactive button. Assistance may be required. _______________ decreases for Interactive button. Assistance may be required. __________ x > - 1 .
                            (increases, decreases)                                             (increases, decreases)

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