Points `(1, -1), (2, -2), (-3, -4), (4, -5)`

Points (1,-1),(2,-2),(4,-5) and (-3,-4)

Locate the points: (1, 1), (1, 2), (1, 3), (1, 4) (2, 1), (2, 2), (2, 3), (2, 4) (1, 3), (2, 3), (3, 3), (4, 3) (1, 4), (2, 4), (3, 4), (4, 4)

Name the octants in which the following points lie: (1, 2, 3),(4, -2, 3), (4, -2,-5), (4, 2, -5), (- 4, 2, -5), (- 4, 2, 5), (-3,-1, 6) (2,-4, -7).

The coplanar points (1,2,4 ),(-2,2,1 ), (2,4,-3 ) ,(5,4,0) form

Show that the points : (4, 7, 8), (2, 3, 4), (- 1, - 2, 1), (1, 2, 5) are the vertices of a parallelogram.

Show that the points (-1,2,1), (1,-2,5), (4,-7,8) and (2,-3,4) are vertices of a parallelogram.

Find the coordinates of the point where the line through the points (3, – 4, – 5) and (2, – 3, 1), crosses the plane determined by the points (1, 2, 3), (4, 2, – 3) and (0, 4, 3).

Locate the points: (1,1),(1,2),(1,3),(1,4) (2, 1),(2,2),(2,3),(2,4)(1,3),(2,3),(3,3),(4,3)(1,4),(2,4),(3,4),(4,4)