Question

Please help

Write the standard equation of a circle with center (0, 3) and radius 7.

A: x2 + (y + 3)2 = 49

B: x2 + (y + 3)2 = 7

C: x2 + (y – 3)2 = 49

D: x2 + (y – 3)2 = 7

Answer 1

C (x)^2 + (y-3)^2 = 49

Explanation:

The equation for 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

we know the center is (0,3) and the radius is 7

(x-0)^2 + (y-3)^2 = 7^2

(x)^2 + (y-3)^2 = 49