Quiz about Circle Equations Quiz

Question 1

What is the radius?

Accepted Answer

18

Answer

72

Answer

38

Answer

14

Question 2

See Picture

Accepted Answer

$$\left(x-2\right)^2+\left(y+1\right)^2=25$$

Answer

$$\left(x+1\right)^2+\left(y-2\right)^2=25$$

Answer

$$\left(x+2\right)^2+\left(y-1\right)^2=5$$

Answer

$$\left(x-1\right)^2+\left(y+2\right)^2=5$$

Question 3

Which graph corresponds to
(x-8)²+ (y+2)²=

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 4

What is the center of a circle with the equation $$(x - 3)^2 + (y + 4)^2 = 16$$ ?

Accepted Answer

(3, -4)

Answer

(3, 4)

Answer

(-3, 4)

Answer

(-3, -4)

Question 5

What is the radius of the circle whose equation is $$(x + 1)^2 + (y - 2)^2 = 25$$ ?

Accepted Answer

5

Answer

25

Answer

50

Answer

10

Question 6

Which of the following is the correct equation of a circle with center at (-3, 5) and radius 7?

Accepted Answer

$$(x + 3)^2 + (y - 5)^2 = 49$$

Answer

$$(x - 3)^2 + (y + 5)^2 = 49$$

Answer

$$(x + 3)^2 + (y - 5)^2 = 7$$

Answer

$$(x - 3)^2 + (y + 5)^2 = 7$$

Question 7

Given the circle equation $$(x - 4)^2 + (y + 6)^2 = 36$$ , what is the radius of the circle?

Accepted Answer

6

Answer

36

Answer

18

Answer

12

Question 8

Graph the circle with the equation $$(x - 2)^2 + (y + 3)^2 = 9$$ . What are the coordinates of the center?

Accepted Answer

(2, -3)

Answer

(2, 3)

Answer

(-2, -3)

Answer

(-2, 3)

Question 9

Which of the following equations represents a circle with a center at (0, 0) and a radius of 10?

Accepted Answer

$$x^2 + y^2 = 100$$

Answer

$$x^2 + y^2 = 10$$

Answer

$$(x - 10)^2 + (y - 10)^2 = 100$$

Answer

$$(x + 10)^2 + (y + 10)^2 = 100$$

Question 10

If a circle is graphed on a coordinate plane and passes through the points (1, 7), (1, -5), and (7, 1), what is the radius of this circle?

Accepted Answer

6

Answer

12

Answer

3

Answer

9

Circle Equations Quiz

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