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8 February, 10:36

Find the standard form of the equation of the parabola with a focus at (0, - 9) and a directrix y = 9.

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  1. 8 February, 11:04
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    Y = (-1/9) x2

    y2 = - 36x

    y = (-1/36) x2

    y2 = - 9x
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