Functions: onto, one to one, domain, range
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.
In this video I show you how to determine if a set of points is a function or not
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- 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?
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Staff Review
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.
