Question

A circle passes through point (−2, −1) and its center is at (2, −1). Which equation represents the circle?
A) (x − 2)2 + (y + 1)2 = 16
B) (x − 2)2 + (y − 1)2 = 16
C) (x + 2)2 − (y + 1)2 = 20
D) (x − 2)2 + (y + 1)2 = 20

Answer 1

Answer:

A) (x − 2)2 + (y + 1)2 = 16

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Step-by-step explanation:

center: (2, −1)

(x − 2)2 + (y + 1)2

radius: 4

4^2 = 16