Explanation:
Bar graph is used to compare. They are tower like graph to show what has more or less than the other.
Example: There 30% tigers in a jungle and there are 20% bears.
The bar for the tiger would be taller than the bar for the bear.
Line graph is used to time. It shows how many of things you do over the period of time.
Example: Benny wants to read 4 pages in 5 minutes.
You would use the graph to mark how many pages you read on the y axis and mark your time on the x axis.
The graph will show how consistent or inconsistent you are in a certain amount of time.
Hope this help and less confusing.