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A circle has a center at (4, -7) and a radius of 4 units. Write an equation of this circle.

User Ravi Hamsa
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1 Answer

2 votes

Answer:

(x – 4)^2 + (y + 7)^2 = 16

Explanation:

The formula of a circle is:

(x – h)^2 + (y – k)^2 = r^2

(h, k) represents the coordinates of the center of the circle

r represents the radius of the circle

If you plug in the given information, you get:

(x – 4)^2 + (y – (-7))^2 = 4^2

which simplifies into:

(x – 4)^2 + (y + 7)^2 = 16

User Gianluca Demarinis
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