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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.
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OpenStudy (loser66):
you have vertex-directrix form of the parabola. just plug all in.
OpenStudy (loser66):
since the focus (0,4) that means your parabola has the graph |dw:1401238101774:dw|
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