
Function problem
A rectangle has a vertex on the graph of y = 9  x^2, one in the origin, one in the positive side of the x  axis, and the fourth one on the positive side of the y  axis.
* express the area of the rectangle as a function of x
* what is the domain? ( i can prob get this when i know how to do the area one)
* wat is the area of the rectangle when x = 1.5?
thanks for your help

Hello, NeedHelp18!
Did you make a sketch?
Quote:
A rectangle has a vertex on the graph of ,
one at the origin, one on the positive x  axis, and the fourth one on the positive y  axis.
(a) Express the area of the rectangle as a function of
Code:

*9
*  *
* +   *
* :::::: *
* ::::::y *
::::::
*++*
 x 3
The area of the rectangle is: .
Therefore: .
Quote:
(b) What is the domain?
The domain is: .
Quote:
(c) What is the area of the rectangle when ?