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OpenStudy (barrelracing):
What is the equation of the quadratic graph with a focus of (4, −3) and a directrix of y = −6? a) -1/6x^2 +4/3x + 11/6 b) 1/6x^2 - 4/3x - 11/6 c) 3/50x^2 + 11/25x + 3/5 d) 2/50x^2 + 11/25 + 2/5
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OpenStudy (freckles):
|dw:1444325601632:dw| the vertex is halfway between the directrix and the focus
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