Question

Circle S has an equation of (x – 16)2 + (y + 9)2 = 4. What is the center and radius of circle S?

Answer 1

The general equation for a circle is
\[ (x-x_0)^2+(y-y_0)^2 = r^2 \]
Where (x0, y0) is the center and r is the radius. Try to see what values correspond to your circle.

Answer 2

so center is (16,-9) and radius is 2?

Answer 3

Yes, you got it!