Show that the points A(5, 4, 2), B(6, 2, -1) and C(8, -2, -7) are collinear.

Show that the point A(-2, 4, 7), B(3, -6, -8) and C(1, -2, -2) are collinear.

Show that the points A (-2, 3, 5), B(1, 2, 3) and C(7, 0, -1) 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 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 A(2, 3, -4), B(1, -2, 3) and C(3, 8, -11) are collinear.

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

Using the distance formula, show that the points A(3, -2), B(5, 2) and C(8, 8) 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.