Question

21.
Find the center and radius of the circle with equation (x-1)^2 + (y+1)^2 = 4.

Answer 1

r is 2

Answer 2

center is (1,-1)

Answer 3

thanks!

Answer 4

center is(1,-1)
and radius is i

Answer 5

radius is 1

Answer 6

the radius is actually 2....but thanks!

Answer 7

\[r=\sqrt{g ^{2}+f ^{2}-c}\]
so the radiuss will be 2

@questionable10

Answer 8

please check out my other questions!

Answer 9

u r right

Answer 10

(x-h)^2+(y-k)^2=r^2
(h;k) -> center
r -> radius