Verify whether the points `(1,2,-1),(-2,1,-1)` lie on same side (or) opposite sides of the plane `2x+y+z+1=0`.

Verify whether the points (1, 2, -1) (-2,1,1) lie on same side (or) opposite side of the plane 2x+y+z+1=0 .

State whether the points A(2,-1),B(1,1) lie on the same or opposite sides of the line 3x+4y=6 .

State whether the points A(3, 2), B(-4,-3) lie on the same side or opposite sides of the line 2x - 3y +4 = 0 .

State whether the points (3,2) and (-4,3) lie on the same side or opposite sides of the line 2x-3y+4=0 .

If the points (1,1,-3) and (1,0, -3) lie on opposite sides of the plane x + y + 3z + d=0 then

For what values (s) of a will the two points (1,a,1) and (-3,0,a) lie on opposite sides of the plane 3x + 4y - 12z + 13=0 ?

If the points (2,-3,5),(-1,3,2) lie on the same side of x-y+2z+k=0

Find the range of k if the point (1, 2, 1), (-2, 1, -1) were to be on the same side of the plane 2x+3y-kz=0 .