[masraum]

Originally Posted by k9handler

Ok my semester is almost over, but I am in need of some assistance.

Describe in words the graph of each of these curves below. Include in your description the shape, along with other possible relevant information such as length, width, and center points.

a. Y = 3X2[/b]

A skinny Parabola. I suspect, based on the other equations, that the formula should read Y=3x^2. It seems unlikely that they'd ask about a straight line like "y=6x" in the same set that askes about circles and other second degree equations which is why I think the 2 should be a ^2. They also don't use the ^ notation on the circle formulas.

b. (X-1)2 + (Y-8)2 = 16

circle

The standard equation of a circle with center C(h,k) and radius r is as follows:

(x - h)2 + (y - k)2 = r2

c. (X+2)2 + (Y-4)2 = 36

Another circle, but for this one the center is (-2,4)

d. Y = X2 - X

This one is a bit different. It's got a vertical asymtope at x=0, and a horizontal asymtope at y=0. You can graph it here
http://www.freemathhelp.com/equation-grapher.html
just paste this in x^2-x