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    Real-Life Application of Functions Versus Relations and Reversal of Variables

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    In the real world, what might be a situation where it is preferable for the data to form a relation but not a function?

    If the variables in an equation were reversed, what would happen to the graph of the equation? For example, how would the graph of y = x² relate to the graph of x = y²?

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    Solution Preview

    The graph of y=x^2 and x=y^2 are symmetric with respect to the line y=x.

    In real ...

    Solution Summary

    An application of a function versus a relation is provided. The effect of reversal of variables is investigated.