Which expressions can be used to find the coordinates of the midpoint of pq with endpoints p(3, –1) and q(–7, –6)? check all that apply.

To determine the midpoint of a line segment with the given endpoints, one should determine the averages of the coordinates of the points. 

x-coordinate: (3 + -7) / 2 = -2
y-coordinate: (-1 + -6) /2 = -7/2

Hence, the coordinates of the midpoint of the line segment are (-2, -7/2).