Consider the following straight line and two points that fall on the line.
Straight line:& y=x+1
Point A:& (- 3, - 2)
Point B:& (3,4)
Let's visualize the two points in a coordinate plane.
We know that y=x+1 passes through both of these points. Is there any other line you can draw which also passes through them? No! This is exactly what the Two Point Postulate tells us. Through any two points, there exists only one line.
