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Math Help - Parabola

  1. #1
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    Parabola

    Write an equation for a parabola with vertex(-2,4) and passing through
    (-1,8)

    It should be simple im just not getting it
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  2. #2
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    y = a(x-h)^2 + k

    vertex is at (h,k) = (-2,4)

    plug in -1 for x and 8 for y ... solve for " a".
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