The lines x=4 and x=3 intersect at the origin.
False
x=4 is a line parallel to y-axis at a distance of 4 units from it, and x=3 is a line parallel to y-axis at a distance of 3 units from it.
We see that these lines are both parallel to y-axis and hence parallel to each other.
Therefore these lines do not intersect at all.
Hence the given statement is false.