Write the equation of the circle centered at (1,−5) with radius 18.

Question

Write the equation of the circle centered at  with radius 18.

Answer 1

The equation of a circle is:

(x-h)² + (y-k)² = r²

^{Where (h, K) is the coordinate of the center point of the circle. In this case the center of the circle is (1, -5). Therefore, h=1 and k= -5.}

^{From the equation the r represents the radius of the circle.}

^{All you would need to do is plug in the values of the center point and the radius into the equation.}