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    jordo6889's Avatar
    jordo6889 Posts: 13, Reputation: 1
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    #1

    Nov 5, 2009, 10:12 AM
    find equation when given passing points
    Find an equation of the form y=ax^2+bx+c whose graph passes through the points (-1,-4), (-3,-14) and (4,-14).
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Nov 5, 2009, 10:31 AM
    Quote Originally Posted by jordo6889 View Post
    Find an equation of the form y=ax^2+bx+c whose graph passes through the points (-1,-4), (-3,-14) and (4,-14).


    Substituting point #1:



    Substituting point #2



    Substituting point #3



    If I did everything correctly, you now have three independent equations, and three unknowns. Solve the set of simultaneous equations for a, b, and c.
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