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OpenStudy (anonymous):
please help checking answer? Find the equation for the parabola whose directrix is y = 3 and focus is (4, 9). A. y = (1/12)(x – 4)2 + 6 B. y = 12(x + 4)2 - 6 C. x = 3(y – 4)2 - 6 D. x = 3(y + 4)2 - 2 answer i got is b is that right?
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