Question Number 212462 by MrGaster last updated on 14/Oct/24

Commented by MrGaster last updated on 14/Oct/24
The original title is from China, and the poster said this:
A question that comes to mind when I am a little bit:
If n points are arranged in a plane, so that any straight line in the plane passes no more than 3 points, how many straight lines can pass through 3 points at most?
If the above "3" is changed into an arbitrary positive integer x greater than 2, what is the answer?