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

Show that the points A(1,2,7), B(2,6,3) and C(3, 10, -1) are collinear.

Show that the points A(1, -2, -8) B (5, 0, -2) and C(11, 3, 7) are collinear and find the ratio in which B divides AC.

Show that the points (1, 3), (2, 1) and (1/2, 4) are collinear, by using any other method.

Show that the points (1, 3), (2, 1) and (1/2, 4) are collinear, by using concept of slope

Show that the points (1, 3), (2, 1) and (1/2, 4) are collinear, by using using a straight line and

Show that the points (2,-1,3), (4,3,1) and (3,1,2) are collinear.

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

For what values of alpha and beta the points (1, 2, 3), ( alpha , beta , 7) and (2, 10, 1) are collinear.

Find the value of x for which the points (x, -1) (2,1) and (4, 5) are collinear.

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