Question

Find the value of a, for which point P (a/3,2) is mid points of the line segment joining the points Q(-5,4) & R(-1,0).

Answer 1

X Co-ordinate Of Midpoint Of Point P = ( X Co-ordinate Of Point Q + X Co-ordinate Of Point Q)/2

Implies That , a/3 = (-5-1)/2
a/3 = -3
a=-9