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OpenStudy (anonymous):
1. What are the focus and directrix of the parabola with the equation y = 1/12 x2? focus: (3, 0) ; directrix: y = –3 focus: (–3, 0) ; directrix: y = 3 focus: (0, 3) ; directrix: y = –3 focus: (0, –3) ; directrix: y = 3 4. What is an equation of a parabola with the given vertex and focus? vertex: (5, 4) ; focus: (8, 4)
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