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16 March, 06:02

The vertex of this parabola is at (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. 16 March, 07:37
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    Vertex form:

    y = a (x-2) ^2 - 1

    solve for a:

    0 = a (5-2) ^2 - 1

    1 = a (3) ^2

    1 = 9a

    a = 1/9
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