Show that the straight line joining the points `(-1,0,-2)` and `(1,3,-1)` is perpendicular to the straight line joining the points `(9,1,-6)` and `(7,2,-5)`

Show that the staright line joining the points (-1, 0, -2) and (1, 3, -1) is perpendicular to the straight line joining the points (9, 1, -6) and (7, 2, -5)

If the straight line joining the points (4, -3, 2) and (3, -1, 5) is perpendicular to the straight line joining the points (m, -2, 1) and (7, 3, -2), then the value of m is -

Prove that the straight line joining the points A(4, -3, 2) and B(2, -1, -1) is parallel to the straight line joining the point C(7, -3, 5) and D(1, 3, -4).

The straight line joining the points (-2,5) and (-4,3) is perpendicular to the line joining the points (k,0) and (2,3k) , find k.

Prove that the straight line joining the points (4, 5, 0) and (5, 3, 3) is parallel to the straight line joining the point (4, 3, -3) and (6, -1, 3).

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

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

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

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