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Line graphs

A line graph shows how one quantity responds to changes in another – often, but not always, time. A line graph might show how prices change over time, the expected weight of a cow given its size or how fast a chemical reaction takes place as you change the concentration of one of the ingredients.

Reading a line graph is simple and (hopefully) fairly obvious. You’re normally given one value (say, the time) and have to find the other (say, the temperature).

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