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

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

If the points A(2, 1, -1), B(0, -1, 0), C(lambda, 0, 4), D(2, 0, 1) are coplanar, then lambda=

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 points A(0,4,3) , B(-1,-5,-3), C(-2,-2,1) and D(1,1,1) are coplanar. Also find the equation of the plane in which these points lie.

Show that the point (0, -1, -1), (4 5, 1), (3, 9, 4) and (-4, 4, 4) are coplanar and find the equation of the common plane.

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

Show that the points A(2, -1, 0) B(-3, 0, 4), C(-1, -1, 4) and D(0, -5, 2) are non coplanar.

(a) show that the following four points are coplanar : (i) (4,5,1), (0,-1,-1) ,(3,9,4) and (-4,4,4) (ii) (0,-1,0), (2 , 1 , -1) , (1,1,1) and (3,3,0). (b) Show that the four points : (0,-1,-1), (4,5,1), (3,9,4) and (-4,4,4) are coplanar. Also,find the equation of the plane containing them .

Find the value of p if the points A(2,-1,1),B(4,0,p),C(1,1,1) and D(2,4,3) are coplanar.

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