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What is the center of the circle represented by this equation?

(x – 7)2 + (y + 4)2 = 9

1 Answer

4 votes

Answer:

The center is (7,-4) and the radius is 3

Explanation:

(x – 7)^2 + (y + 4)^2 = 9

The equation of a circle can be written as

(x – h)^2 + (y - k)^2 = r^2

where (h,k) is the center and r is the radius

Rewriting the original equation

(x – 7)^2 + (y - - 4)^2 = 3^2

The center is (7,-4) and the radius is 3

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