Time remaining:
give the center and radius of the circle, show work.

Algebra
Tutor: None Selected Time limit: 0 Hours

9x^2+9y^2+54y=-72

Dec 3rd, 2014

9x^2+9y^2+54y=-72

The whole equation multiply 1/9,

x^2+y^2+6y=-8

x^2+y^2+6y+9=-8+9

x^2+(y+3)^2=1

So the center of the circle is (0,-3), the radius is 1.

Dec 3rd, 2014

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Dec 3rd, 2014
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Dec 3rd, 2014
Dec 6th, 2016
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