Only one line can be drawn through eight points.
line segments
If you're talking about straight lines (not curves) the answer is one.
An infinite number of lines can be drawn through a single point, but only one through two points (of course, if the points don't have the same coordinates).
There are 91 lines.
Only one line can be drawn through eight points.
There is only one possible line that can can through two different points, presuming there are no overlaps.
15 lines.
line segments
One.
In Euclidian or plane geometry, there can be only one line through two fixed points. Lines cannot actually be drawn; if you see it it is not a geometric line. If the points are on a curved surface as in a geometry that is non-Euclidian, then there can be infinitely many lines connecting two points.
uncountable lines can be drawn through one point.
1 straight line. An infinite number of curved lines.
If you're talking about straight lines (not curves) the answer is one.
An infinite number of lines can be drawn through a single point, but only one through two points (of course, if the points don't have the same coordinates).
The answer will depend on the relative positions of the points.
2 lines, I believe.