Completing the Square in Circles

What is the center and the radius for the circle with the equation x² + y² + 4x + 6y - 36 = 0?

• (-2,5), r = 6

• (2,7), r = 6

• (-2,-3), r = 7

• (2, 3), r = 7

Tags

CCSS.HSG.GPE.A.1

What is the radius of the circle with this equation x²+y²-10x+8y-23=0?

• 4

• 2

• 8

Tags

CCSS.HSG.GPE.A.1

What is the center for the circle with this equation x² + y² + 2x - 8y - 10 = 0?

• (-2,8)

• (2,7)

• (-1,4)

Tags

CCSS.HSG.GPE.A.1

Find the center and radius of the circle: x²+y²+14x-2y=-1

• center= -7,2 radius= 3

• center= -7,1 radius= 7

• center= -4,1 radius= 5

Tags

CCSS.HSG.GPE.A.1

In the equation (x-4)²+(x-3)²=25, the center of the circle is at...

• (-3, -4)

• (4, 3)

• (-4, -3)

• (3, 4)

Tags

CCSS.HSG.GPE.A.1

Which graph corresponds to (x-4)²+ (y+4)²=25

• A

• B

• C

• D

Tags

CCSS.HSG.GPE.A.1

What is the radius of the given circle: x² + y² - 10x + 8y - 23 = 0?

• 4

• 2

• 8

Tags

CCSS.HSG.GPE.A.1

What is the center of the circle with the equation x² + y² + 4x + 6y - 36 = 0 ?

• (-2,5)

• (2,7)

• (-2,-3)

Tags

CCSS.HSG.GPE.A.1

Determine the center of the circle.

x² + y² + 10x - 8y - 8 = 0

• C = (5,-4)

• C = (-5,4)

• C = (-4,5)

• C = (5,-4)

Tags

CCSS.HSG.GPE.A.1

In the equation (x+2)²+(y-3)²=4, the center of the circle is at...

• (-2, 3)

• (-3, 2)

• (2, -3)

• (3, -2)

Tags

CCSS.HSG.GPE.A.1