# What are coincident lines?

##### 1 Answer

Well, I think you mean two lines that lie one on top of the other.

There is a slight difference between two parallel lines and two coincident lines.

Parallel lines have space between them while coincident don't. Parallel lines do not have points in common while coincident ones have ALL points in common!!!

When you consider the mathematical form

1) Parallel lines differs only in the real number

For example:

The two lines:

The two lines described by these equations have the same inclination but cross the

2) Coincident lines have the same

Sometimes can be difficult to spot them if the equation is in implicit form:

For example:

The two lines:

If you isolate

Try to plot them and see.