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A dish has focus (0, 3) and directrix y = -3. Which equation fits it?
Ax² = 12y
By² = 12x
Cx² = 6y
Dx² = 3y
Answer & Solution
Correct answer: A. x² = 12y
Focus (0, 3) gives a = 3, so the parabola is x² = 4ay = 12y.
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