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posted by  nicandro@hawaii.ed on 10/8/2008 7:47:58 PM  |  status: Live  

function help

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The base of a rectangle lies on the x axis while its upper two vertices are on the parabola y=10-x2. Suppose the upper right vertex is (x, y). Write the area of the rectangle as a function of x.
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posted by KingChochach0 on 10/8/2008 8:24:20 PM  |  status: Live
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Response Details:
The graph looks like this (except the corners of the rectangle should be on the parabola):

The area is a=2x*y
take the formula and plug in place of y in the area formula.
That should do it.

Hope I helped.
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