Equation of a Circle | Baamboozle - Baamboozle | The Most Fun Classroom Games!

18 Public

A kahoot to practice using the equation of a circle

Study Slideshow

In the equation of a circle, what does r represent?

Length of the radius

Coordinates of the center

Length of the diameter

None of these

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In the equation of a circle, what does (h, k) represent?

The length of the radius

None of these

The coordinates of the center

The length of the diameter

15

Find the radius of the circle if its equation is x2 + y2 = 49

2

7

0

49

15

Find the radius of the circle if its equation is (x+ 2)2 + (y - 3)2 = 183

13.5

2

3

183

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Find the radius of the circle if its equation is (x + 7)2 + (y + 8)2 = 81

7

8

81

9

15

Find the radius of the circle if its equation is x2 + (y + 2)2 = 16

8

16

4

2

15

Find the center of the circle if its equation is x2 + y2 = 49

(7, 0)

(0, 49)

(0, 7)

(0, 0)

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Find the center of the circle if its equation is (x + 2)2 + (y - 3)2 = 49

(3, -2)

(2, -3)

(-3, 2)

(-2, 3)

15

Find the center of the circle if its equation is (x - 7)2 + (y + 8)2 = 49

(8, -7)

(7, -8)

(-8, 7)

(-7, 8)

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Find the center of the circle if its equation is (x - 10)2 + (y - 9)2 = 49

(-10, -9)

(9, 10)

(-9, -10)

(10, 9)

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What is the equation of the circle whose center is (-1, 2) and radius is 9?

(x + 1)2 + (y - 2)2 = 81

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

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

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

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What is the equation of a circle whose center is (2, 0) and radius is 4?

x2 + (y - 2)2 = 16

(x - 2)2 + y2 = 16

(x + 2)2 + y2 = 16

(x - 2)2 + y2 = 8

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What is the equation of a circle whose center is (-3, -7) and radius is 5

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

(x - 3)2 + (y - 7)2 = 25

(x + 3)2 + (y + 7)2 = 25

(x + 3)2 + (y + 7)2 = 5

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What is the equation of a circle whose center is (5, -1) and radius is 8

(x - 5)2 + (y - 1)2 = 64

(x + 5)2 + (y - 1)2 = 64

(x - 5)2 + (y + 1)2 = 64

(x + 5)2 + (y + 1)2 = 64

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What is the equation of the circle graphed below?

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

(x + 1)2 + (y + 3)2 = 4

(x - 1)2 + (y + 3)2 = 4

(x + 1)2 + (y - 3)2 = 4

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What is the equation of the circle graphed below?

(x - 2)2 + (y + 1)2 = 8

(x - 2)2 + (y + 1)2 = 16

(x - 2)2 + (y + 1)2 = 4

(x + 2)2 + (y - 1)2 = 16

15