Answer:
(5, 4.5)
Explanation:
You would want to use the midpoint formula to find the midpoint of line 5,6 and 5,3.
Midpoint formula =

x1 = 5
x2 = 5
y1 = 6
y2 = 3
Plug those into the midpoint formula.

5+5=10/2 = 5
6+3=9/2=4.5
you answer will be (5,4.5)
hope this helps.