SOLUTION: x^2 +y^2 +6x -2y-6=0 graph the circle

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Question 812446: x^2 +y^2 +6x -2y-6=0 graph the circle
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi,



x^2 +y^2 +6x -2y-6=0  graph the circle

Standard Form of an Equation of a Circle is %28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2 

where Pt(h,k) is the center and r is the radius



Completing the squares:

x^2 +y^2 +6x -2y-6= (x+3)^2 + (y-1)^2 -9 -1 - 6 = 0 

                    (x+3)^2 + (y-1)^2 = 16

Circle with C(-3, 1) radius 4