39. The coordinates of the endpoints of CD, in the standard (x,y) coordinate plane, are (-4, -2) and (14, 2). What is the x-coordinate of the midpoint of CD ?

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

The abscissa of the midpoint of the line segment is the average of the abscissa of the two ends of the line segment. So (14-4)÷2=5. So choose C.