a) Each straight line consists of 3 points?

Question

b) Through any pair of distinct points exactly one straight line can be drawn.
c) Through each point not on given straight line x exactly one straight line y parallel to x can be drawn.
d) There are at least two distinct straight lines.

How many straight lines are there?

Answer 1

a) through d) are givens, correct? Then from a & d, there are at least 5 points. (Nothing says a point can't be used in more than 1 line.) But I see no upper limit.
Am I missing something? Like how many points there are?

Answer 2

of what you put up there, b is true