Question

A circle is represented by the equation shown below.

(x + 3)2 + (x - 2)2 = 4

Which statement is true?
Answer
The circle is centered at (3, 2) and has a radius of 2.
The circle is centered at (-3, 2) and has a diameter of 2.
The circle is centered at (-3, 2) and has a radius of 2.
The circle is centered at (-3, -2) and has a diameter of 2.

Answer 1

In any given equation:

\(\Large \color{Black}{\Rightarrow (x - h)^2 + (y - b)^2 = r^2 }\)

(h,b) are the center co-ordinates.
r is the radius.

Answer 2

So D?

Answer 3

?

Answer 4

Radius is 2.

Answer 5

And center is (-3,2)

Answer 6

oh, I never really understood that equation..

Answer 7

Now do you understand?

Answer 8

yea