7
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Equation of a Circle

Question 7 • RS AZ-Common Core Geometry B

A circle has a diameter of 12 units, and its center lies on the x-axis. What could be the equation of the circle? Check all that apply.

Answer
A
(x – 12)2 + y2 = 12
B
(x – 6)² + y² = 36
C
x² + y² = 12
D
x² + y² = 144
E
(x + 6)² + y² = 36
F
(x + 12)² + y² = 144
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