Functions: onto, one to one, domain, range

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Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
6767 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

This lesson teaches you how to determine if a set of points is a function or not using function notation. You can determine if it is a function if each element in the domain maps to exactly one element in the range. The video also covers onto and one-to-one functions and how to determine if a set of points falls into these categories.

Lesson Description:

In this video I show you how to determine if a set of points is a function or not

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Questions answered by this video:
  • What is function notation?
  • How do you know if a set of points is a function?
  • How do you find the domain and range of a function?
  • How do you find the domain and range of a set of points?
  • What is the domain and range of (-2, 2), (2, 4), (3, 8), and (4, 4)?
  • When is a set of points not a function?
  • What does it mean for a function to be onto?
  • How do you know if a function is one-to-one?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows an example of a list of ordered pairs and explains whether the relation is a function, what its domain and range are, and whether it is onto or one-to-one. All parts of this lesson are explained clearly.