Circle Equation

What is the center & the radius in the equation (x-4)²+ (y-3)²= 64

• (4,3) r=8

• (-4,-3) r=8

• (8,6) r=32

• (-8,-6) r=32

What is the equation of a circle with radius 4 and center (0, 8)?

• x² + (y-8)² = 16

• (x-8)² + y² = 4

• x² + (y-8)² = 4

• x² + (y+8)² = 16

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

• (3, -4)

• (-3, 4)

• (4, 3)

• (-4, -3)

What is the value of x?

• 22

• 25

• 15

• 20

Solve for a.

• 6

• 6.67

• 8.33

• 10

Solve for d.

• 8

• 9

• 10

• 12

Solve for x.

• 29

• 33

• 41.5

• 50

Identify the center and the radius for equation: (x+2)² + (y-7)² = 49

• (2,7) r=7

• (2,-7) r=12

• (-2,7) r=7

• (-2,7) r=12

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

• A

• B

• C

• D

Name the tangent line. 

• s

• WR

• VT

• QR