Understand the basics of functions and their graphs, including:

1. Find the domain and range of a relation.

2. Determine whether a relation is a function.

3. Determine whether an equation represents a function.

4. Evaluate a function.

5. Graph functions by plotting points.

6. Use the vertical line test to identify functions.

7. Obtain information about a function from its graph.

8. Identify the domain and range of a function from its graph.

9. Identify intercepts from a function's gra...