Question

c:

Answer 1

the only reason for 2 lines not to have a common point of intersection is if they are parallel lines; parallel lines have the same slope, but different y intercepts

Answer 2

there are also shew lines, but those are not really associated with and R^2 vector space as the question implies

Answer 3

um, skew lines , not shew lines :)

Answer 4

Thank you c:

Answer 5

That is very helpful!

Answer 6

youre welcome, and good luck :)