1. Warm-Up

2. Chp 1.extra – Piecewise Functions
Algebra 2

3. You will be able to… Evaluate Piecewise functions.
Graph and write piecewise functions.

4. Domains and Ranges
The domains and ranges of many real-valued functions of a real variable are interval or combinations of intervals.
The intervals may be open, closed, or half-open and finite or infinite.

5. Intervals
The endpoints of an interval make up the interval’s boundary and are called boundary points.
The remaining points make up the interval’s interior and are called the interior points.
Closed intervals contain their boundary points.
Open intervals contain no boundary points. Every point of an open interval is an interior point of the interval.

9. Example 1 – Evaluating a Piecewise Function

10. You Try!

11. Example 2 – Graphing a Piecewise Function

12. You Try!

13. Example 3 – Writing a Piecewise Function

14. You Try!