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1 December, 14:22

A parabola has its vertex at (2, 2), and the equation of its directrix is y = 2.5. The equation that represents the parabola is

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  1. 1 December, 18:10
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    We are given with

    vertex coordinates: (2, 2)

    equation of directrix: y = 2.5

    The distance between the focus and the vertex is

    2.5 - 2.0 = 0.5

    The focus then is at

    (2.0 - 0.5, 2.0) = (1.5, 2.0)

    The equation of the parabola is

    (y - 2) = 4 (0.5) (x - 2) ^2

    y = 2 (x - 2) ^2 + 2

    y = 2x^2 - 8x + 10
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