Question

What is the equation of this circle?

(x – 1)2 + y2 = 2

(x + 1)2 + y2 = 4

(x + 1)2 + y2 = 2

(x – 1)2 + y2 = 4

Answer 1

http://www.mathwarehouse.com/geometry/circle/equation-of-a-circle.php this help?

Answer 2

Kinda but if you look at the picture, the radius is 5 right? 5*5=25 and that's not an answer?

Answer 3

radious is 2 actually

Answer 4

Oh how? :/

Answer 5

cuzz the diameter is 4 and half the diameter is riadius so it 2

Answer 6

take a look at this

Answer 7

(x−h)^2+(y−k)^2=r^2

just plug in
(x−1)^2+(y−0)^2=2^2

then expans and such

Answer 8

(x−1)^2+(y−0)^2=2^2

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

Answer 9

Okay awesome, thank you! (: