Question

A circle is represented by the equation . Which of the following shows the

location of the center of the circle and its radius?
A-center (1, 5); radius = (square root) 6
B-center (1, 5); radius = 6
C-center (−1, −5); radius = 6
D-center (−1, −5); radius =(square root) 6




2. Given a circle with center (– 3, 6) and radius 5, what is an equation of the circle?
A.

Answer 1

(x+3)^2+(y-6)^2=25

Explanation:

The standard formula for the equation of a circle is

(x-h)^2+(y-k)^2=r^2

where the center is (h,k), and r is the radius!