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March 30, 2017

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y=x^2-3x+c and y=k-x-x^2 meet at
(-2,12)
what are the values of c and k??

omg ive tried 100 ways but cant find the correct ans...please help??

Thank You

  • math - ,

    "Way" number 101 is easier:

    From the first equation and the fact that (-2,12) is a solution,
    12 = 4 + 6 +c
    So c = 2

    Similarly, from the second equation, with (-2,12) being a solution of that also,
    12 = k +2 -4
    k = 14

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