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    Blondie2007's Avatar
    Blondie2007 Posts: 1, Reputation: 1
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    #1

    Sep 16, 2007, 11:31 AM
    Graphing Parabolas, Really weird answer
    So, I have the equation y= -3(x-2)^2-13
    I tried to find the x-intercepts so that I could graph the parabola, but I got this crazy answer:

    -2 plus or minus the square root of 39 over negative 3


    ??
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Sep 16, 2007, 11:43 AM
    Is there any reason why you're not expecting "crazy answers"?
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #3

    Sep 16, 2007, 11:46 AM
    This has two complex solutions. It does not cross the x axis.




    Set y to 0 and get
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