9.12. Circles in the Coordinate Plane http://www.ck12.org
Interactive Practice
MEDIA
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Find the center and radius of each circle. Then, graph each circle.
1.(x+ 5 )^2 +(y− 3 )^2 = 16
2.x^2 +(y+ 8 )^2 = 4
3.(x− 7 )^2 +(y− 10 )^2 = 20
4.(x+ 2 )^2 +y^2 = 8Find the equation of the circles below.