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OpenStudy (anonymous):
tell whether graph opens upward/downward find axis of symmetry and vertex y=-2x^2+6x+7
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OpenStudy (precal):
-2 tells you that it is downward
OpenStudy (anonymous):
vertex and axis of symmetry
OpenStudy (precal):
|dw:1333139162811:dw|
OpenStudy (precal):
that will give you your axis of symmetry. Take that x value and plug it into your equation and get your y value. That point is your vertex, since it is downward it is a max point
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