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Math Help - Find the equation of line that ....

  1. #1
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    Find the equation of line that ....

    find a constant b such that f(x)=b
    that divides the area between x-axis
    and the function g(x) = 9 - |x|
    into 2 equal eares.
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  2. #2
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    Can you solve this, \dfrac{(9-b)^2}{2}=\dfrac{81}{4}~?

    If so, how does that work?
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  3. #3
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    Quote Originally Posted by Plato View Post
    Can you solve this, \dfrac{(9-b)^2}{2}=\dfrac{81}{4}~?

    If so, how does that work?
    oh ya !!!
    Triangle1: has a right angle and 2 equal sides.
    Triangle2: is the whole triangle.

    area of Triangle1 = \frac {(9-b)^2}{2}

    area of Triangle2 = (\frac{1}{2}).(18).(9) = 81

    area of Triangle1 = \frac{81}{4}

    Thank you very much.
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