A Line graph (chart) is a way to summarize series of quantities.

The following line graph represents the value of Robert's baseball card collection.

The line graph below shows the number of automated teller machines (ATMs) in the United States for the years 2008 through 2014

Between which two years did the number of ATMs remain about the same? 2008-2009 2009-2010 2010-2011 2012-2013 2013-2014