Graphing Circles | 144 plays

1.

Multiple Choice

30 sec

1 pt

What does (h,k) stand for in the standard circle equation?

(h,k) is the center of the circle

(h,k) is a point on the circle.

(h,k) is a point that we guess and find

(h,k) is the distance of the circle

2.

Multiple Choice

3 mins

1 pt

In the equation (x-3)²+(y+4)²=121, the radius of the circle is

242

11

121

22

3.

Multiple Choice

5 mins

1 pt

What is the equation of a circle with radius 2 and center (3, 4)?

(x+3)² + (y+4)² = 2

(x-3)² + (y-4)² = 2

(x+3)² + (y+4)² = 4

(x-3)² + (y-4)² = 4

4.

Multiple Choice

5 mins

1 pt

What is the equation of the circle?

(x+1)² + (y +1)² = 3

(x+1)² + (y -1)² = 3

(x+1)² + (y +1)² = 9

(x-1)² + (y -1)² = 9

5.

Multiple Choice

5 mins

1 pt

What are the coordinates of the center and the radius of the circle with equation:
(x - 4)² + (y - 3)² = 25 ?

Center (4,3)
Radius = 5 units

Center (4,3)
Radius = 25 units

Center (-4,-3)
Radius = 25 units

Center (-4,-3)
Radius = 5 units

6.

Multiple Choice

5 mins

1 pt

In the equation (x-3)²+(y-2)²=16, the center of the circle is...

(3,2)

(-3, -2)

(-2, -3)

(2, 3)

7.

Multiple Choice

5 mins

1 pt

What is the equation of the circle.

(x - 3)²+ (y + 4)² = 9

(x - 3)²+ (y + 4)² = 3

x²+ y² = 9

(x - 1)²+ (y + 1)² = 7

8.

Multiple Choice

5 mins

1 pt

See Picture

A

B

C

9.

Multiple Choice

5 mins

1 pt

What is the center of the circle with equation x² + y² = 1?

(1, 1)

(0, 0)

(0,1)

not enough information

10.

Multiple Choice

1 min

1 pt

Center is at (-3, 1) and radius is 3.

(x + 3)² + (y - 1)² = 9

(x - 3)² + (y + 1)² = 9

(x - 3)² + (y + 1)² = 3

(x + 3)² + (y - 1)² = 3

11.

Multiple Choice

30 sec

1 pt

What is the equation of the circle, with centre (3,8) and radius 4 units?

(x - 3)² + (y - 8)² = 4

(x - 3)² + (y - 8)² = 16

(x + 3)² + (y + 8)² = 16

(x + 3)² + (y + 8)² = 4

12.

Multiple Choice

1 min

1 pt

What is the center and radius of this circle?
(x + 3)² + (y + 7)² = 4

Center: (-3, -7)
radius = 2

Center: (3, 7)
radius = 4

Center: (-3, -7)
radius = 4

Center: (-3, 7)
radius = 2

13.

Multiple Choice

5 mins

1 pt

The diameter of a circle has length 12. The center is at (-5, 2). Give the equation of the circle.

(x + 5)²+ (y - 2)²= 144

(x - 5)² + (y + 2)² = 36

(x + 5)²+ (y - 2)²= 36

(x - 5)² + (y + 2)² = 12

14.

Multiple Choice

5 mins

1 pt

Which graph corresponds to

x²+ (y-6)²=9

A

B

C

D

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