With 5 random graphs make a cross with 2 sets of parrellel lines with each set at perpendicular angles. No additional information should appear on the final graph.
It's easy enough to draw a graph with 4 straight lines, 2 of which are parallel to each other and the other two of which are perpendicular to the first two. However, where does the "random" part come in and what's the significance of the "5"?
