That's only assuming your set of points only contains three points. If you have four or more points, it's entirely possible that a line you draw between two poi

That's only assuming your set of points only contains three points. If you have four or more points, it's entirely possible that a line you draw between two points passes through a third. . ... If you're given the above set of points, it's obviously not collinear due to the point at the top, but if you draw a line through any of the bottom two points, it will hit a third.