A rectangle has one corner in Quadrant 1 on the graph of an ellipse whose equation is 9x^2+16y^2=144, another at the origin, a third on the positive y-axis, and the fourth on the positive x-axis. Express the area of the rectangle as a function of x.

Question

tkhunny · Answer

What's your plan?  It's a rectangle with opposite corners at the Origin and on the ellipse.

anonymous · Answer

The answers are,
A. A(x)=Square root of .5625-9x^2
B. A(x)=x square root of 9-16x^2
C. A(x)=x square root of 16-9x^2
D. A(x)= x square root of 9-.5625x^2

tkhunny · Answer

Super.  What's your plan? It's a rectangle with opposite corners at the Origin and on the ellipse.

anonymous · Answer

What does that mean?