SOLUTION: The graph of x2 −6x+9+y2 +2y+1 = 25 is a circle. Where is the center of the circle? What is the radius of the circle?

Algebra ->  Customizable Word Problem Solvers  -> Geometry -> SOLUTION: The graph of x2 −6x+9+y2 +2y+1 = 25 is a circle. Where is the center of the circle? What is the radius of the circle?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1157993: The graph of x2 −6x+9+y2 +2y+1 = 25 is a circle. Where is the center of the circle? What is the radius of the circle?
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!


+%28x%5E2-6x%2B9%29+%2B+%28y%5E2%2B2y%2B1%29+=+25+

+%28x-3%29%5E2+%2B+%28y%2B1%29%5E2+=+5%5E2+



Compare this to the standard form of the equation of a circle:

+%28x-x%5B0%5D%29%5E2+%2B+%28y-y%5B0%5D%29%5E2+=+r%5E2+

where the center is at (x%5B0%5D,y%5B0%5D) :



Center at (3,-1), r=5