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March 26, 2017

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How do I know if the points (2,-15) lie on a parabola which has the equation y=x^2-6x-7?

  • Math - ,

    (2,-15), Y = X^2 - 6X -7.
    When 2 is plugged into the equation,
    you should get Y = -15 which proves that the point is on the parabola.

    Y = 2^2 - 6 (2) -7 = -15

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