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20 September, 23:05

Write the equation for a paraloba with a focus at (7,2) and a directrix at y=-2

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  1. 20 September, 23:26
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    y = (x-7) ^2 / 8

    Step-by-step explanation:

    The focus to vertex distance is (2 - (-2)) / 2 = 2 and the parabola open's upwards.

    Thus: a = 1 / (4·2) = 8, vertex at (7,0).

    This means that:

    y = (x-7) 2/8
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