Answer: infinitely many
Explanation:
In geometry , A line is a straight (one dimensional ) undefined figure which has no thickness. It extends infinitely in each direction (no-endpoint).
A point is also a undefined geometric figure that has no dimension , it helps to get the exact location of any figure on plane.
Since a line extends infinitely in both directions, so there are infinite number of points contained by it.
Thus , the number of points are contained on a line = Infinitely many