Question 1

What is the equation of a circle whose diameter is 24 and whose center is at the origin?

Accepted Answer

$x^2+ y^2= 144$

Answer

$x^2+ y^2 = 576$

Answer

$x^2+ y^2 = 64$

Answer

$x^2+ y^2= 24$

Question 2

What are the coordinates of the center of the circle represented by $(x + 3)^2 +(y – 5)^2 = 16$?

Accepted Answer

(-3, 5)

Answer

(-3, -5)

Answer

(3, 5)

Answer

(3, -5)

Question 3

In what quadrant is the center of the circle represented by $( x + 2)^2 +(y – 3)^2 = 100$ located?

Accepted Answer

II

Answer

I

Answer

III

Answer

IV

Question 4

What is the length of the diameter of a circle represented by the equation ($x + 5)^2 + (y – 1)^2 = 64$?

Accepted Answer

16

Answer

8

Answer

2

Answer

64

Question 5

Which of the following describes a circle on the coordinate plane with a center at (2, -3) and a radius of 5 units?

Accepted Answer

$(x-2)^2 + (y + 3)^2 = 5^2$

Answer

$(x-2)^2 + (y + 3)^2 = 25^2$

Answer

$(x+2)^2 + (y - 3)^2 = 5^2$

Answer

$(x+2)^2 + (y-3)^2 = 25^2$

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