If you are talk about a line segment, it would contain two points.
If your talking about a ray, it would contain 1 point.
If your talking about just the line, it would contain no points.
A line has infinite length, that is when produced in both direction ,there is no end.It has negligible thickness.
⇒If you put ,a point on a line and produce it in other direction we will call it ray.
⇒If you will put two points on a line,we will call it line segment.
⇒Two determine a unique line we need only two points.
⇒There are infinite number of Points on a line.We can prove this ,with the help of the following Statement.
⇒Between any two real numbers ,there are infinite number of real numbers.So, there are infinite number of points on the line.
