Question

A third line goes through the same point. How would that show up in a table representing the relationship for the third line?

Answer 1

Most likely the table will contain one pair of values that correspond to the coordinate where the previous lines intersect.

Explanation:

It may be possible that the table before the third line contains values on either side of the point of intersection, but the slope will produce a line that connects those values and passes through the previous intersection.