Given 3 non-collinear points, which of the following statements are not true?

there is only 1 plane that contains all 3 points.
they will be contained in the same line.
any of the 3 points can be the intersection of 2 planes.
any 2 of the points defines a line entirely within the plane.

Non-collinear points are points which do not form a straight line. Three non-collinear points create a plane therefore they are always coplanar. Therefore the statements which are not true are:

They will be contained in the same line. 

Any of the 3 points can be the intersection of 2 planes.

(x) - (y) = (1 + 4i)