I have two lines, on a problem, that have the same slope and the same y-intercept, we have to graph them, but I forgot what it is called when the lines are equal.

I have two lines, on a problem, that have the same slope and the same y-intercept, we have to graph them, but I forgot what it is called when the lines are equal.
Intersect? Converge? Meet? Rarely are they equal.

Two lines with the same slope and same y intercept? That's one line.

The classification of a line like that would be consistent dependent. Not sure if that's what your looking for, but that's the only thing you can call it. Besides the same line.