Unit 20 Section 3 : Line graphs
In this section we look at how to use line graphs.
Example QuestionMr Smith recorded the temperature outside his classroom every hour during one school day.
His results are listed in the following table:
Line graphs are useful for showing how things change over time.
To plot the line graph, he drew some axes, plotted on a point for each item of data, then joined up the points:
See if you can answer the questions using the graph above.