Question

Find the Value of a, for which the point P(a/3,2) is The midpoint
of the line segment joining the points Q(-5,4) And R (-1,0)

Answer 1

remember the formula for midpoint of line segment. It is given by-
(X1+X2)/2,(y1+y2)/2
here (X1+X2)/2 is equal to a/3 and X1=-5 and X2=-1

Answer 2

here is your answer.