Show that the line joining the points A(2,3,-1) and B(3,5,-3) is perpendicular to the line joining C(1,2,3) and `D(3,5,7)`.

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

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

If the line joining the points (-1,2,3) (2,-1,4) is perpendicular to the line joining (x,-2,4) and (1,2,3) then x =

For that value of 'x' the line joining A(4,1,2), B(5,x,0) is perpendicular to the line joining C(1,2,3), D(3,5,7) ?

For what value of x the line joining A(4,1,2), B(5,x,0) is perpendicular to the line joining C(1,2,3), D(3,5,7).

Slope of the line joining points (2,-3)(1,4)

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