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OpenStudy (barrelracing):
Derive the equation of the parabola with a focus at (−5, 5) and a directrix of y = -1. f(x) = −one twelfth (x − 5)2 + 2 f(x) = one twelfth (x − 5)2 + 2 f(x) = −one twelfth (x + 5)2 + 2 f(x) = one twelfth (x + 5)2 + 2
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OpenStudy (anonymous):
im not good with directrix but i think it is d because this is what the graph looks like:|dw:1438022849329:dw|
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