A line graph, also known as a line chart, is a type of chart used to visualize the value of something over time. For example, a finance department may plot the change in the amount of cash the company has on hand over time. The line graph consists of a horizontal x-axis and a vertical y-axis. Most line graphs only deal with positive number values, so these axes typically intersect near the bottom of the y-axis and the left end of the x-axis. The point at which the axes intersect is always (0, 0). Each axis is labelled with a data type. For example, the x-axis could be days, weeks, quarters, or years, while the y-axis shows revenue in dollars. Data points are plotted and connected by a line in a "dot-to-dot" fashion. Line graphs are used to track changes over short and long periods of time and they are also used to compare changes over the same period of time for more than one group.
These activities designed include two parts, the first part focusing on the expressions involved in the description of line graphs and the second part introducing the development of the line graph report.
In this activity, you are going to grasp some useful expressions to describe line graphs.
Look at the following five line graphs and choose the most appropriate expression to match each line graph.
Watch the video and answer the following questions.
The line graph below gives information on cinema attendance in the UK. Summarize the information by selecting and reporting the main features and make comparisons where relevant.
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