+614 identify the center and radius of each. Then sketch the graph.
1. x ^2+y^2-6y=0
use the information provided to write the standard for equation of each circle
1. center: (-13,-14)
radius:1
2. center: ( 15,-8)
area: 16 pi
3. center:(-2,9)
point on circle: (-5,18)
4. center:( 13,7)
tangent to y=11
5. center lies in the second quadrant tangent to x= -14, y= -4, and x=8
6. ends of a diameter: (11,-6) and ( 1,14)
