The equation of the perpendicular bisector of line segment joining points

- The equation of the perpendicular bisector of line segment joining points a(4 5) and b(-2 3) is
- The equation of the perpendicular bisector of line segment joining points a 4 5 and b - 2 3 is
- The equation of the perpendicular bisector of line segment joining points a 4 5 and
- The equation of the perpendicular bisector of the line segment joining the points 1 2 and 2 0 is