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March 25, 2017

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What is the equation in standard form, of a parabola that models the values in the table?
x f(x)
-2 4
0 -6
4 70

  • algebra - ,

    let y = ax^2+bx+c

    it's easy to see that c=-6, so

    4a-2b = 10
    16a + 4b = 70

    (a,b)=(4,3) and so

    y = 4x^2+3x-6

  • algebra - ,

    thank you, helped explaining the answer

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