Circles — Test Answers

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24

Consider a circle whose equation is x squared plus y squared minus 2 x minus 8 is equal to 0 Which statements are true? Choose three correct answers.

A
The center of the circle lies on the y -axis.
B
The radius of the circle is 3 units.
C
The center of the circle lies on the x -axis.
D
The radius of this circle is the same as the radius of the circle whose equation is x squared plus y squared is equal to 9 .
E
The standard form of the equation is open paren x minus 1 close paren squared plus y squared is equal to 3 .
25

What is the measure of angle BCD ?

A
53 degrees
B
37 degrees
C
74 degrees
D
106 degrees

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