**Line Graph**

A line graph is a graph that seems to be a line in the eye view. Line graphs are used to track changes over short and long periods of time. If a line graph is L5 then, it has just 5 lines are connected together.

Example: Line Graph

**Empty Graph**

An empty graph is a graph that has no edges at all, only has vertices (nodes). It is also called null graph.

Example: Empty or Null Graph