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Math Help - [SOLVED] y=a(x-h)(x-k) - i dont understand this formula

  1. #1
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    [SOLVED] y=a(x-h)(x-k) - i dont understand this formula

    what does it mean and how does it work?
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  2. #2
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    Are you sure it's not supposed to be y=a(x-h)^2+k

    If so, then you're dealing with an equation for a parabola in its vertex form, with the vertex at point (h,k) - Note the change in sign of the x-coordinate.
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  3. #3
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    Quote Originally Posted by positiveion View Post
    what does it mean and how does it work?
    This is the equation of a quadratic function with the zeros x = h or x = k.

    The factor a forms the graph of this function (a parabola) depending of sign and value.
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