What is the solution for coincident lines?
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.
When two lines are coincident then equation has?
If two lines are coincident then, they have infinite solution and pair of linear equations is consistent; If two lines are intersecting then, they have unique solution and pair of linear equations is consistent ...