One to One Functions

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Taught by mrbrianmclogan
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Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, we learn about one to one functions and the importance of each element in the domain appearing to exactly one element in the range. The teacher uses a numerical subfunction and a graphing analysis to explain the difference between one to one and non-one to one functions. It's emphasized that one to one functions are crucial when talking about inverses, and that every element in the domain must map to a unique element in the range.

Lesson Description:

Overview of one to one functions

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Questions answered by this video:
  • Do the following set of ordered pairs represent a one-to-one function (i) {(2,4),(3,6),(5,10),(1.5,3)} (ii) {(2,4),(-2,4),(3,9),(-3,9)}