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

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

Answer 2

Because general circle equation is (x-a)^2+(y-b)^2=r^2

Answer 3

Thank you very much.

Answer 4

Don't mind :)