Two lines that lie exactly on top of each other or we can say that one line is exactly lying on top of another line are called coincident lines. Equations of two coincident lines are the same when reduced to the simplest form. For example, x + y = 4 and 2x + 2y = 8 are the equations of two coincident lines.

What does it mean if a line coincides?

Coincident Lines Definition. The word 'coincide' means that it happens at the same time. In Mathematics, the coincident is defined as the lines that lie upon each other. It is placed in such a way that when we look at them, they appear to be a single line, instead of double or multiple lines.

How do you know if a line is coincide?

If a line is written as Ax + By = C, the y-intercept is equal to C/B. If each line in the system has the same slope but a different y-intercept, the lines are parallel and there is no solution. If each line in the system has the same slope and the same y-intercept, the lines are coincident.