Lesson: Intro to Functions
We introduce the concept of a function in this video. We discuss terms like relation, domain, and range. We also discuss function notation, how to evaluate functions, and the vertical line test.
0:00 Intro
0:28 Definition of a relation
0:43 Definition of domain and range
1:05 Example of finding the domain and range from points
2:15 Definition of a function
2:40 How to visualize functions and a visual relationship between domain and range
5:07 Example of determining if a set of points represents a function
6:58 Notation for a function f(x) and how to describe this notation
8:27 How to use function notation from a set of points
9:19 How to use function notation with equations
13:52 The vertical line test
14:12 Examples of how to use the vertical line test
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