Question

What is the equation of this circle?

x2 + (y + 1)2 = 4

x2 + (y – 1)2 = 2

x2 + (y + 1)2 = 2

x2 + (y – 1)2 = 4

Answer 1

can u please give more info

Answer 2

i added a picture

Answer 3

can you see it?

Answer 4

x2 + (y – 1)2 = 4

Answer 5

how did u get that?

Answer 6

@Shiv23 Can you find out the center and radius from your posted pic. ?

Answer 7

center is (0,1) right ?

Answer 8

Yes, C ( 0, 1), how about radius r?

Answer 9

2?

Answer 10

Right again :)
Do you know the standard equation of Circle with Center ( h, k) and radius r?

Answer 11

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

Answer 12

Wow, you're great learner =)
Now your job is put what you've known together with:
Center ( 0, 1) and r = 2 into the formula:
(x-h)² + (y - k)² = r²

Answer 13

what is "h" though

Answer 14

Center ( h, k) and radius r?

Answer 15

(x-0)^2+(y-1)^2=4

Answer 16

Can you find the answer by yourself now?

Answer 17

x2 + (y – 1)2 = 4