If the coordinates of A and B be (1, 1) and (5, 7), then the equation of the perpendicular bisector of the line segment AB is
The equation of a straight line passing through the origin and perpendicular to the straight line 2x + 3y - 7 = 0 is ______.
The equation of the line parallel to the line 2x – 3y = 1 and passing through the middle point of the line segment joining the points (1, 3) and (1, –7), is:
Equation of the line passing through (–1, 1) and perpendicular to the line 2x + 3y + 4 = 0, is