help!

josh123

Junior Member
Joined
Oct 5, 2005
Messages
52
Can someone show me how to do this and find the answer?

Find the center and radius of the circle given by
(x - 2)2 + (y + 3)2 = 0.25
 
When a circle equation is in the form:

. . . . .(x - h)<sup>2</sup> + (y - k)<sup>2</sup> = r<sup>2</sup>

...as yours is, just read off the center (h, k) and radius r directly from the equation.

Eliz.
 
so would this be the answer? Center at (-2, 3) and radius equal to 0.5
 
The radius is correct, but check your signs on h and k. For instance, if h = -2, then x - h = x - (-2) = x + 2, but "x + 2" isn't what is in your equation.

Eliz.
 
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