Question

Gilbert drew the incorrect graph shown below to represent the circle (x +2)2 + (y -1)2 = 9



Which statement explains why Gilbert’s graph is incorrect?

The radius of the circle should be 2 instead of 9.

The center of the circle should be (2, -1) instead of (-2, 1).

The radius of the circle should be 3 instead of 9.

The center of the circle should be (-1, 9) instead of (-2, 1).

Answer 1

@Callisto

Answer 2

(x -h)^2 + (y -k)^2 = r^2
radius = r
centre = (h,k)
Can you do it now?

Answer 3

would it be B?

Answer 4

Why?

Answer 5

because that gave me the center when i counted starting from both sides

Answer 6

The centre of the circle is?

Answer 7

2,1

Answer 8

How do you get it?

Answer 9

i cut in half the cirlcle

Answer 10

Then I think you've found the wrong diameter.. You should try again :|