Question

A circle is represented by the equation shown below.
(x - 5)2 + (y + 9)2 = 144
Which statement is true?

a. The circle is centered at (-5, -9) and has a diameter of 12.
b. The circle is centered at (5, -9) and has a radius of 12.
c. The circle is centered at (5, 9) and has a diameter of 12.
d. The circle is centered at (5, 9) and has a radius of 12.

Answer 1

(x - h)^2 + (y - k)^2 = r^2 is the equation of a circle with the center at (h, k) and radius = r.
Compare this to (x - 5)^2 + (y + 9)^2 = 12^2
What is h, k and r?

Answer 2

b

Answer 3

jello lol

Answer 4

5, -9, 12 ?

Answer 5

Yes.