Question

Which equation describes the circle with center (5, -1) and
radius 4?

Answer 1

`(x-5)^2+(y+1)^2=4^2`

Explanation:

The equation is:
`(x-h)^2+(y-k)^2=r^2`

(h, k) = center.

`(x-5)^2+(y+1)^2=4^2`