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OlgaM077 [116]
3 years ago
14

The center of a circle is at (−3, 1) and its radius is 9. What is the equation of the circle?

Mathematics
1 answer:
jek_recluse [69]3 years ago
7 0

If a circle has center (a,b) and radius r, the equation is

(x-a)^2+(y-b)^2=r^2

So, you have

(x+3)^2+(y-1)^2=81

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