Line joining the points (3,-4) and (-2,6) is perpendicular to the line joining the points (-3,6) and (9,-18).

Show that the line joining the points (2,-6) and (-4,-8) is perpendicular to the line joining the points (4,-2) and (6,-8) .

Show that the line joining the points (4,-3) and (0,7) is perpendicular to the line joining the points (5,2) and (0,0) .

If the line joining the points (6,-2) and (8,4) is perpendicular to the line joining the points (12,8) and (24,y) , find the value of y .

If a line joining the points (-2,6) and (4,8) is perpendicular to the line joining the points (8,12) and (x,24), then the value of x is (i) 3 (ii) 4 (iii) -4 (iv) 2

Show that the line joining the points (4,-1) and (-3,3) is parallel to the line joining the points (8,0) and (1,4) .

Determine the value of k so that the line joining points A(k,1,-1) and B(2,0,2k) is perpendicular to the line joining the points C(4,2k,1) and D(2,3,2) .

Show that the line joining the points (4,5) and (1,2) is parallel to the line joining the points (9,-2) and (12,1) .

Find the equation of the line passing through the point (5,2) and perpendicular to the line joining the points (2,3) and (3,-1).

If the line joining the points (5,y) and (4,9) is parallel to the line joining the points (0,5) and (1,7) , find the value of y .

Find the equation of the line passing through the point (-4, -5) and perpendicular to the line joining the points (1, 2) and (5, 6).