Show that the points `(0,-1,0).(2,1,-1),(1,1,1),(3,3,0)` are coplanar.

For what values of alpha ,the points (0,-1,0),(2,1,-1),(1,1,1) and (3,3,alpha) are coplanar

Show that the points (1,0,1),(1,1,0),(0,1,1) and (0,0,2) are coplanar.

Show that the points (1,-1,1),(2,3,1),(1,2,3) and (0,-2,3) are coplanar. Find the equation of the plane in which they lie.

Show that the four points S(0,-1,0), B(2,1,-1), C(1,1,1) and D(3,3,0) are coplanar. Find the equation of the plane containing them.

Show that the four points A(0,-1,0), B(2,1,-1), C(1,1,1) and D(3,3,0) are coplanar. Find the equation of the plane containing them.

Show that the four points A(0,-1,0), B(2,1,-1), C(1,1,1) and D(3,3,0) are coplanar. Find the equation of the plane containing them.

Show that the four points S(0,-1,0), B(2,1,01), C(1,1,1) and D(3,3,0) are coplanar. Find the equation of the plane containing them.

Show thast the points P(1,1,1),Q(0,-1,0),R(2,1,-1) and S(3,3,0) are coplanar.

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

Show that the points (0,-1,-1) , (-4,4,4) , (4,5,1) and (3,9,4) are coplanar.