1. the graph opens
a. upward
b. downward

2.the vertex of the graph is
a.(2,5)
,-5)
,5)

3.the axis of symmetry of the graph is
a. x=2
b. x=-2

1. The coefficient of the squared term (-1/3) is negative, so the graph opens downward.

2. Matching the pattern to
.. y = a(x -h)^2 +k
we find (h, k) = (-2, 5) . . . . . . selection C

3. See the previous answer. The axis of symmetry is
.. x = h
Since h = -2, the axis is x = -2. . . . . . selection B

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