How the original number has risen.
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The answer
You use line graphs to see how something changes over a period of time , Such as weeks,days,months,or even years . We use line graphs alot!
Line graphs are used to display data or information that changes continuously over time. Line graphs allow us to see overall trends such as an increase or decrease in data over time.By contrast, bar graphs emphasize the magnitude of changes, so they are an excellent way to demonstrate data with sharp fluctuations, but not continuously over time.
bar graphs are useful for comparing data b/c you cn actually see what the difference is between them.
If the data does not change continuously, it is called discrete data, and is commonly compared by use of a bar chart.Technical note: please note the use of the word chart, graph is commonly misused in a mathematical sense like this. A graph, mathematically, is a series/group of nodes that represent information and are connected by lines/edges that represent a link to other information. Bar graphs, line graphs, histogram graphs, bubble graphs, area graphs etc, are all technically chartsnot graphs. For more info see the link below on graph theory.