Finding an Inverse Graphically - Problem 3

Explanation

If you graph a function and its inverse on the same axes, they will be reflexive across the line y = x. This makes sense with the idea that the domain and range of a function and its inverse are switched. A function is called one to one if it has an inverse that is a function. Graphically, we can see that a function is one to one if and only if it passes a horizontal line test.

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Graphical interpretation one to one