Show that the line joining the point A(1,-1,2) and B(3, 4, -2) is perpendicular to the line joining the points C(0,3,2) and D(3,5,6).

Show that the line joining the points A(2, 3, 1) and B(4, 6, 2) is perpendicular to the line joining the points C(6, -2, -9) and D(4, -1, -8).

If the line joining the points A(2,3,-1) and B(3,5,-3) is perpendicular to the line joining the points C(1,2,3) and D(3,y,7) then y=

Show by vector method that the line joining the points (1, 4, 2) and (-1, 1, -2) is perpendicular to the line joining the points (2,-3, 4) and (5, 3, -2) .

Show by vector method that the line joining the points (1, 4, 2) and (-1, 1, -2) is perpendicular to the line joining the points (2,-3, 4) and (5, 3,-2) .

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

Show that the line through the points (1,-1,2) and (3,4-2) is perpendicular to the line through the points (0,3,2) and (3,5,6).

Show that the line through the points (1, -1, 2), (3, 4, -2) is perpendicular to the line through the points (0, 3, 2) and (3, 5, 6).

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) .

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) .