Find the Center of a Circle If a Diameter of the Circle

Multiple Choice

Find the center of a circle if a diameter of the circle has the given endpoints.
- $( - 1 , - 6 )$ and $( - 7 , - 2 )$ .

A) $( - 4 , - 2 )$
B) $( 3 , - 2 )$
C) $( - 4 , - 4 )$
D) $( 3 , - 4 )$