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Maths

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It is given a quadratic function y=a(x-h)62+k.If its graph is a parabola with x=2 as its axis of symmetry,and it passes through the two points(3,7)and(4,11)

(a)what isthe value of the constant h?
(b)find the values of the constants a and k,and write down the quadratic function.

  • Maths - ,

    If its axis of symmetry is x=2, then h=2

    7 = a + k
    11 = 4a + k

    3a = 4
    a = 4/3
    k = 17/3

    y = 4/3(x-2)^2 + 17/3

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