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OpenStudy (anonymous):
Find the standard form of the equation of the parabola with a focus at (0, 4) and a directrix at y = -4. y=1/16x^2 y^2=16x y^2=4x y^2 = 1/4x^2
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OpenStudy (anonymous):
My thinking is that the answer is A. Can anyone please support that?
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