What is the center of the circle defined by (x−5)2+(y+1)2=9(x - 5)^2 + (y + 1)^2 = 9(x−5)2+(y+1)2=9?
(5,1)(5, 1)(5,1)
(−5,1)(-5, 1)(−5,1)
(5,−1)(5, -1)(5,−1)
(−5,−1)(-5, -1)(−5,−1)