Integrated Algebra - January 2011

27 What is an equation of the axis of symmetry
of the parabola represented

by y = -x^{2} + 6x - 4?

(1) x = 3 (3) x = 6

(2) y = 3 (4) y = 6

28 Which equation has roots of -3 and 5?

(1) x^{2} + 2x - 15 = 0
(3) x^{2} + 2x + 15 = 0

(2) x^{2} - 2x - 15 = 0 (4) x^{2}
- 2x + 15 = 0

29 A spinner that is equally divided into
eight numbered sectors is spun

20 times. The table below shows the number of times the arrow

landed in each numbered sector.

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