find mid point of line segment whose end points are given

Question

(-3,-2)
(-10,-9)please explain how this is done

Answer 1

( (x1+x2)/2 , (y1+y2)/2 )
= ( (-3-10)/2 , (-2-9)/2 )
=(-13/2 , -11/2)
=(-6.5,-5.5)