Equation of a Circle (Modeling Geometry) | Baamboozle - Baamboozle

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C is the center of the circle shown below.  What is the equation of circle C?

(x + 2)2 + (y - 1)2= 3

(x - 2)2 + (y + 1)2= 3

(x - 2)2 + (y + 1)2= 9

(x + 2)2 + (y - 1)2= 9

A circle has the equation (x-3)2  + (y + 5)2 = 36.  Which of the following statements is false?

The x-coordinate of the center is 3.

The point (3, 1) lies on the circle.

The radius of the circle is 6.

The y-coordinate of the center is 5.

Which is the equation of a circle centered at origin and that passes through the point (-8,0)

(x - 3)2 + (y - 5)2= 64

x2 + y2= 64

(x - 3)2 + (y - 5)2= 34

x2 + y2= 34

A circle has the equation x2 + y2=16.  What is the radius of the circle?

16

32

256

4

Which point lies on the circle whose equation is (x - 3)2+ (y + 3)2= 45

(1, 3)

(3,3)

(2,3)

(0, 3)

A circle has the equation (x+5)2 + (y-2)2 = 9.  What is the center of the circle?

(2, -5)

(5, -2)

(-5, 2)

(-2, 5)

The center of a circle is at (6, -7) and the diameter of the circle is 22. Choose its equation.

(x + 6)2 + (y - 7)2= 121

(x + 6)2 + (y - 7)2= 11

(x - 6)2 + (y + 7)2= 121

(x - 6)2+ (y + 7)2= 11

What is the circumference of a circle whose equation is whose equation is 2x2 + 2y2= 8?   :-D

100.48 units

50.24 units

12.56 units

25.12 units

C is the center of the circle shown below.  What is the equation of circle C?

(x - 1)2 + (y - 3)2= 100

(x + 1)2 + (y + 3)2= 100

(x + 1)2 + (y + 3)2= 25

(x - 1)2 + (y - 3)2= 25

What is the equation of a circle with center (2, 4) and radius 5?

(x+2)2+(y+4)2 = 25

(x-2)2+(y-4)2 = 25

(x-2)2+(y-4)2 = 5

(x+2)2+(y+4)2 = 5

Select the equation of a circle whose center is at (-5, 0), and its diameteris 18. 

(x + 5)2+ y2 = 81

(x - 5)2+ y2= 9

(x - 5)2+ y2 = 81

(x + 5)2+ y2= 9