How to determine if a set of points is a function, onto, one to one, domain, range

The video tutorial explains function notation, focusing on how to determine if a set of points is a function. It covers the concepts of domain and range, and how each element in the domain should map to exactly one element in the range to qualify as a function. The tutorial also discusses the characteristics of onto and one-to-one functions, providing examples to illustrate these concepts.

Explain the concept of a 'one-to-one' function.

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What are the implications if a function is not one-to-one?

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