Question

What is the center of the circle x2+(y+7)2=49?

Answer 1

Answer:

The center is at (0,-7) and the radius is 7

Step-by-step explanation:

We can write the equation of a circle as

(x-h)^2 + (y-k)^2 = r^2  where (h,k) is the center and r is the radius

x^2+(y+7)^2=49

Rewriting

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

The center is at (0,-7) and the radius is 7