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Math Help - Getting the equation of a parabola with only the x-intercepts.

  1. #1
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    Getting the equation of a parabola with only the x-intercepts.

    How do i get the equation of a parabola with on the zeros (30,0) and (20,0)



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  2. #2
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    Quote Originally Posted by Lolman View Post
    How do i get the equation of a parabola with on the zeros (30,0) and (20,0)



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    You will need one more point to determine if there is any stretch/compression and reflection to your parabola. So not enough information.
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  3. #3
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    Quote Originally Posted by Lolman View Post
    How do i get the equation of a parabola with on the zeros (30,0) and (20,0)


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    You can't get the equation but a family of parabolas:

    p(x)=a (x-20)(x-30) = a(x^2-50x+600)

    The actual form of the parabola depends on the value of a.
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