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OpenStudy (anonymous):
Choose all of the following equations that have a graph in which the parabola opens downward. More than one answer may be chosen. A.y = 16x2 + 2x - 4 B.y = -4x2 + 8x - 19 C.y = 2x2 + 2x + 8 D.y = -x2 - 6x + 10
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OpenStudy (anonymous):
graph opens downward when coefficient of x^2 is negative so it B and D.
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