math help plz2!!!!

Find an equation of parabola that has the indicated vertex and whose graph passes through the given point.
Vertex (-3,5)
Point (-6,1)

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asked by julissa
  1. ****Point(-6,-1)

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    posted by julissa
  2. from the vertex, we know that

    y = a(x+3)^2+5
    Now plug in the values to get a:

    1 = a(-6+3)^2 + 5
    9a = -4
    a = -4/9

    y = -4/9 (x+3)^2 + 5

    See

    http://www.wolframalpha.com/input/?i=y+%3D+-4%2F9+%28x%2B3%29^2+%2B+5

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    posted by Steve

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