Show that the points (5,1) and (1,-1) and (11,4) are collinear. Also ifnd the equation of the line containing them.

Show that the points (1, 1), (2, 3) and (3, 5) are collinear.

Show that the points (-2,3,5), (1,2,3) and (7,0,-1) are collinear.

Show that the points A(3,5,1), B(-1,0,8) and C(7,10,-6) are collinear.

Show that the point :- (4, 2), (7, 5) and (9, 7) are collinear.

Show that the points A(2,3,4),B(-1,2,-3) and C(-4,1,-10) are collinear. Find the equations of the line in which they lie.

Show that points A(-2,1),B(-5,-1) and C(1,3) are collinear.

Show that the points (1, 4), (3, - 2) and (- 3,16) are collinear and find the equation of the st. line an which they lie.

Show that the points A(1,-2,-8), B(5,0,-2) and C(11,3,7) are collinear.

Show that the points A(1,3,2),B(-2,0,1) and C(4,6,3) are collinear.

Show that the points A(2,3,-4), B(1,-2,3), C(3,8,-11) are collinear.