Making line graphs


Making line graphs to show change over a period of time is a straightforward process. Instead of drawing bars, a dot is used at the correct height





Take a look at the following line graph.Then, we will explain some of its features

Line graph
The title is " Scores on a basic math test"

The scale is at the left of the graph. The distance between each square is 10, so the scale is 10

It shows scores for a student over a period of time or after taking 10 basic math test.

A wealth of information can be deducted from the graph

The lowest score is 40 and the highest score is 100

The greatest increase or improvement happened between test #2 and test #3. As you can see the student went from a score of 40 to a score of 70.

The lowest decrease or happened between test #6 and test #7. The student went from a score of 90 to a score of 60

Looking at the graphs, it looks like although the score dropped a couple of times, overtime the student made consistent progress.

Example:

Use the following data to make a line graph

We get:

Table to make line graph with
Line graph for table
The graph has an upward trend and shows that overtime, gas prices kept increasing.

Looking at the graph, you can see that the line is steeper between 2007 and 2008.

This means that the highest increase was experienced between 2007 and 2008. Gas prices went up by a dollar







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