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math

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Find an expression for the function whose graph is the bottom half of the parabola x + (y - 9)2 = 0.
y=?
some help would be appreciated!

  • math -

    y=9-(1/2)x

  • math -

    apparently that's not the answer =S

  • math -

    x+(y-9)² = 0
    y=√x +9

    For the bottom half, y<9
    therefore
    y=9-√x

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