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Mathematics 8 Online
OpenStudy (anonymous):

What is the equation of the quadratic graph with a focus of (5, -1) and a directrix of y = 1? (1 point) f(x) = - 1/4(x - 5)2 + 1 f(x) = 1/4(x - 5)2 + 1 f(x) = - 1/4(x - 5)2 f(x) = 1/4(x - 5)2

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