TO FIND: The coordinates of a point on x axis which lies on perpendicular bisector of line segment joining points (7, 6) and (−3, 4).
Let P(x, y) be any point on the perpendicular bisector of AB.
Then,by symmetry
PA=PB
On x-axis y is 0, so substituting y=0 we get x= 3
Hence the coordinates of point is i.e. option (b) is correct