Question

3) Graph the circle x2+ (y + 2)2= 9. Label the center and at least four points on the circle.

Answer 1

Number 3 please? Thanks!

Answer 2

what is the standard form of a circle?

Answer 3

(x-h)^2+(y-v)^2=r2

Answer 4

now compare to your expression, \(x^2 +(y+2)^2=9\) , then h =? k =? r =?

Answer 5

Okay....Wait. But How can I figure out the center points?

Answer 6

Why don't you answer me?:

Answer 7

Well geez. Alright.

Answer 8

I don't even understand what you are asking me to do.

Answer 9

Since you skip it, you don't know how to find the center. I realize that fact right after you ask me what is the center although you said ok before.

Answer 10

Not with this question no.

Answer 11

ok, slower.
Do you agree with me that \(x^2 = (x-0)^2\)?

Answer 12

Yeah I guess

Answer 13

Yes I do.

Answer 14

and \((y +2) = y-(-2) \) , ok?

Answer 15

Yes

Answer 16

9 = 3^2 ok?

Answer 17

Ok

Answer 18

Compare the standard form of a circle with your problem:
\[(x -\color{red}{h})^2 +(y -\color{blue}{k})^2 =\color{purple}{r}^2\\(x -\color{red}{0})^2 +(y -\color{blue}{(-2)})^2 =\color{purple}{3}^2\]

Can you tell me h, k,r on your problem are?

Answer 19

Oh! Omg! Nevermind! I have it figured out. It's right here in my book. I had to dig to find it. But thank you! Do you want me to share it with you anyway?