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September 4th, 2016, 12:09 PM  #1 
Newbie Joined: Sep 2016 From: alaska Posts: 16 Thanks: 0  Find the center and the radius r of the circle
I have no idea about to even go about doing this. Does anyone mind giving me a hand and explaining it a little? Find the center and the radius r of the circle given by the following equation. (x + 7)2 + (y − 2)2 = 25 
September 4th, 2016, 12:38 PM  #2  
Math Team Joined: Jul 2011 From: Texas Posts: 2,815 Thanks: 1458  Quote:
$(xh)^2 + (yk)^2 = r^2$ center at coordinates $(h,k)$, radius = $r$ so, in your equation, (x + 7)^2 + (y − 2)^2 = 25, ... what is $h$ ? what is $k$ ? what is $r$ ?  

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center, circle, find, radius 
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