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30 July, 15:03

The vertex of this parabola is (2,-1). When the y value is 0, the x value is 5. What is the coefficient of the squared term in the parabolas equation

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  1. 30 July, 15:20
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    Vertex form: y = a (x - h) ² + k

    h = 2

    k = - 1

    y = 0

    x = 5

    0 = a (5 - 2) ² - 1

    0 = 9a - 1

    a = 1/9
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