Posted by Kiki on Saturday, September 7, 2013 at 2:47am.
If the coordinates of the center of a circle are (3,1) and the radius is 4, what is an equation of the circle

Math  Graham, Saturday, September 7, 2013 at 2:51am
The equation of a line whose center is (a, b) and radius is c is:
(xa)^2 + (ya)^2 = c^2

Math  Kiki, Saturday, September 7, 2013 at 3:12am
Is it (x3)^2 + (y1)^2 =16

Math  Graham, Saturday, September 7, 2013 at 4:30am
No, it's:
(x+3)^2 + (y1)^2 = 16

Math  Kiki, Saturday, September 7, 2013 at 2:24pm
Thank you
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