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Find Equation for Parabola-Help, Please?

  1. May 12, 2004 #1
    Each pair of the following three lines cross at a point. Those points are the y-intercept, one of the x-intercepts, and the vertex of a parabola. Can you please explain to me how to find an equation for the parabola? And the other x- intercept?

    y+8x=32
    y+5x=32
    y+3x=12

    I have been trying everything I can think of. I think they cross at 0. And I know the equation has to be squared, but I'm so lost on this one, I don't know what else to do. Any advice would be appriciated. Thank you.
     
  2. jcsd
  3. May 12, 2004 #2

    Hurkyl

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    Please post your homework problems just once, and in the homework secton. :tongue2:
     
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