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Math Help - Right Triangle

  1. #1
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    Right Triangle

    A right triangle has one vertex on the graph of y = 9 - x^2, where x > 0, at point (x, y), another at the origin and the third on the positive x-axis at point (x, 0). Express the area A of the triangle as a function of x.
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  2. #2
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    Quote Originally Posted by symmetry View Post
    A right triangle has one vertex on the graph of y = 9 - x^2, where x > 0, at point (x, y), another at the origin and the third on the positive x-axis at point (x, 0). Express the area A of the triangle as a function of x.
    It is the height of the triangle which is y which is 9-x^2 times the base of the triangle with is x times 1/2.
    Thus,
    \frac{1}{2}x(9-x^2)
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  3. #3
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    ok

    I thank you for pointing out how easy this question really is.
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