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What is the equation of the quadratic graph with a focus of (5, 6) and a directrix of y = 2? (1 point)
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Dec 26, 2018
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What is the equation of the quadratic graph with a focus of (5, 6) and a directrix of y = 2? (1 point)
Mathematics
high-school
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the equation of a parabola in focus-directrix form is (x - h)²
= 4p (y - k), where the focus is (h, k + p) and the directrix is y = k - p
in this case, h=5, k+p=6, k-p=2, so k=4, p=2
the equation is
(x-5)
²=8(y-4)
Nick Becker
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Jan 1, 2019
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