How to determine if 3 graphs represent a function and determine domain range

The video tutorial explains how to determine if a relation is a function using the vertical line test. It covers the concepts of domain and range, providing examples to illustrate these ideas. The tutorial also discusses how to identify non-functions and concludes with a recap of the key concepts.

How can you express the domain and range using set notation?

Describe the difference between contained and not contained values in the context of domain and range.

What happens when a vertical line crosses a graph more than once?