Question

A circle is represented by the equation shown below:

(x + 4)2 + (y + 6)2 = 9

Which statement is true?

The circle is centered at (4, 6) and has a diameter of 9.

The circle is centered at (-4, 6) and has a radius of 3.

The circle is centered at (-4, -6) and has a radius of 3.

The circle is centered at (4, -6) and has a diameter of 3.

Answer 1

hint: the equation of a circle in general is

\[\Large (x-h)^2+(y-k)^2=r^2\]

this circle has the center (h,k) and the radius r

Answer 2

so...

Answer 3

Use ^ for exponentiation, like this (x + 4)^2 + (y + 6)^ 2 = 9,
not just (x + 4)2 + (y + 6)2 = 9.

Answer 4

For instance

\[\Large (x-9)^2+(y-14)^2=25\]

is in the form

\[\Large (x-h)^2+(y-k)^2=r^2\]

where (h,k) = (9,14) and r^2 = 25 ---> r = 5

Answer 5

skull is that your real face?

Answer 6

no

Answer 7

o i was like DAMN!

Answer 8

weird.........................................

Answer 9

anyways haha

Answer 10

so im a bit confused..

Answer 11

lol your face on that little box is blurred by the sun :P

Answer 12

:(

Answer 13

thanks?

Answer 14

atleast i can tell your smiling :3

Answer 15

OMG!!!!

Answer 16

?.?

Answer 17

I NEED HELP

Answer 18

The circle is centered at (-4, -6) and has a radius of 3.

Answer 19

xD

Answer 20

thats ur answer right there

Answer 21

@aballer101 THANKS!!!!!!!!!!!!!!!!!!!!!!!!

Answer 22

ur welcome!

Answer 23

NOW THAT HE POINTED OUT MY FACE IS BLUR IMA CHANGE IT :(

Answer 24

sorry