Question

Write the equation of the circle ?
Center (-1,0)
Radius:4

Answer 1

(x+1)^2 + y ^2 = 16

Explanation:

center: (-1,0)

radius=4

(x-h)^2 + (y-k)^2 = r^2

(h,k) = center

plug in the center

(x+1)^2 + (y+0) ^2 = r^2

r^2 = (4)^2

r^2=16

(x+1)^2 + y^2 = 16