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OpenStudy (anonymous):
Please help (: 4. What is the equation of a parabola with focus at F (2,-2) and directrix at y= 4? A. Y= 1/12 x^2 + 1/3x + 2/3 B. Y= 1/12 x^2 + 1/3x - 2/3 C. Y= 1/12 x^2 - 1/3 x - 2/3 D. Y= 1/12 x^2 - 1/3x - 2/3 5. A parabola has a focus at F (-2,4) and a directrix at y=0. What is the location of the vertex of the parabola? A. (-2,0) B. (-2,4) C. (-1,4) D. (-2,2)
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