Show that the joint of the points (1,2,3), (4,5,7) is parallel to the join of the points (-4,3,-6),(2,9,2).

Show that the line through the points (4,7,8),(2,3,4) is parallel to the line through the points (-1,-2,1) (1,2,5)

If the line joining the points (k,1,2),(3,4,6) is parallel to the line joining the points (-4,3,-6),(5,12,I) then (k,I)=

Show that the line thorugh the points (4,7,8) and (2,3,4) is parallel to the line through the points (-1,-2,1) and (1,2,5) .

If the line joining the points (k,2,3),(1,1,2) is parallel to the line joining the points (5,4,-1),(3,2,-3) then k=

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) .

Show that the line joining the points A(4,8) and B(5,5) is parallel to the line joining the points C(2,4) and D(1,7).

Show that the line through points (4,7,8) and 2,3,4 ) is parallel to the line through the points (-1,-2,1) and (1,2,5) .

Show that the line through the points (5, 6) and (2, 3) is parallel to the line through the points (9,-2) and (6,-5).

The line joining the points (1,-5) and (4,-3) is parallel to the line joining the points .