Question

Which equation best represents the circle in the graph?

(x + 1)2 + (y - 2)2 = 25

(x + 1)2 + (y + 2)2 = 25

(x – 1)2 + (y - 2)2 = 25

(x – 1)2 + (y + 2)2 = 25

Answer 1

1st one

Answer 2

do you know how to do this?

Answer 3

you're working backwards now.... figure out the center of that circle and that will be your h, k. r is easily obtained by counting from the center to the circle.

Answer 4

then again, plug it in to the formula as stated earlier.

Answer 5

ok got it :)