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28 February, 14:58

Write the vertex form equation for this parabola: Focus (3,-9), Directrix X=-3

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  1. 28 February, 15:10
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    Y=KX+M

    -9 = (-3/9) * - 3+m

    -9=1+M

    M=-10

    Y = (-3/9) - 10 is the answer
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