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Example of a Graph Used in Real Life

Find an example online of a graph used in real life. Please provide the link to the web page by using the link button in the editor. Describe at least one mathematical feature of the graph (e.g. shape, slope, coordinates, axes, quadrants, etc.) and how the feature/graph can help us to analyze the real-life situation.

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Here is a link to various graphs of the Dow Jones Industrial Average (DJIA) during various periods throughout recent history: http://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average

As you can see from the top graph, the DJIA has been pretty steady since ...

Solution Summary

We give the example of the Dow Jones Industrial Average (DJIA) as a graph widely applicable to real life and explain some of its key features.