Write an equation for the circle with centre C(1, -7) and radius r = 9.
A) (x - 1) 2 + (y + 7) 2 = 3
B) (x - 1) 2 + (y + 7) 2 = 9
C) (x + 1) 2 + (y - 7) 2 = 3
D) (x + 1) 2 + (y - 7) 2 = 81
E) (x - 1) 2 - (y + 7) 2 = 3
Correct Answer:
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