Question

Find the coordinates of the center and the length of the radius of the following circle.

(x + 2)^2 + y^2 = 10

center=
radius= sqrt ?

Answer 1

(-2,0)
sqrt10

Answer 2

(-2,0)
\[r= \sqrt{10}\]

Answer 3

compare with the standard equation to find the center and radius

Answer 4

standard equation is (x-a)^2 + (y-b)^2 = r^2
(a,b) is center r = radius

Answer 5

Are you getting the hang of this type of question?