The equation of a circle is (x – 3)2 + (y + 5)2 = 81. Determine the coordinates of the center of the circle and the length of the radius.
A. Center (-3, -5), radius is 9
B. Center (3, -5), radius is 9
C. Center (-5, -3), radius is 81
D. Center (5, 3), radius is 81

Question

The equation of a circle is (x – 3)2 + (y + 5)2 = 81. Determine the coordinates of the center of the circle and the length of the radius.
A. 	Center (-3, -5), radius is 9
B. 	Center (3, -5), radius is 9
C. 	Center (-5, -3), radius is 81
D. 	Center (5, 3), radius is 81

jdoe0001 · Answer

http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png

anonymous · Answer

the cordinates of center is 3,-5 radius is 9

anonymous · Answer

well i guess i was wrong

anonymous · Answer

because equation of circle is (x-h)^2+(y-k)^2=r^2