SOLUTION: Can someone please walk me through this? I have no idea what I'm doing. "Find the center and radius of (x – 8)2 + (y + 7)2 = 64. A.(–8, 7); 8 B. (–7, 8); 64 C. (8, –7); 8

Algebra ->  Circles -> SOLUTION: Can someone please walk me through this? I have no idea what I'm doing. "Find the center and radius of (x – 8)2 + (y + 7)2 = 64. A.(–8, 7); 8 B. (–7, 8); 64 C. (8, –7); 8      Log On


   

Question 475614: Can someone please walk me through this? I have no idea what I'm doing.
"Find the center and radius of (x – 8)2 + (y + 7)2 = 64.

A.(–8, 7); 8
B. (–7, 8); 64
C. (8, –7); 8
D. (–7, –8); 8"
THANK YOU!!!!!!!! :-)
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
The general form of a circle is

, where the center of the circle is (x0, y0) and the radius is r.

Applying this form, we say that the center of the circle is (8,-7) and the radius is sqrt(64), or 8. Choice C is correct.