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Multiple Choice

What are the focus and directrix of the parabola with the equation y = one-twelfthx2?

A. focus: (3, 0) ; directrix: y = –3

B. focus: (–3, 0) ; directrix: y = 3

C. focus: (0, 3) ; directrix: y = –3

D. focus: (0, –3) ; directrix: y = 3

1 answer

A. focus: (3, 0) ; directrix: y = –3

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