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OpenStudy (anonymous):
identify the quadratic function from the choices below whose parabola opens downward? a.y=-5x+x^2 b.y=2x^2-4x c. y=x^2-11x+7 d y=x-2x^2+9
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OpenStudy (anonymous):
d opens downwards
OpenStudy (jdoe0001):
same as before
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