For example, the line graph below shows the Consumer Price Index again. However, this graph shows the change in price for three different categories: medical care (red), ...

Learn about line graphs with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

A line chart connects a series of data points and is used by traders to monitor prices, currencies, indexes, and other data.

Save guides, add subjects and pick up where you left off with your BBC account. Plotting a graph takes time. Often mathematicians just want to know the key features. These are: shape, location and ...