To properly graph all kinds of functions (many of which don’t have a parent function you can easily translate), you need to first find the domain–all x-values at which the functions exist. Some functions don’t exist at a certain point; some don’t exist at a range of points. Arun and Katie describe the domain and how to find it, and present examples of functions with different domains.

**Lesson 2: Solving equations and inequalities**

**Lesson 3: Graphing**

- Introduction to graphing
- Parent functions
- Exercises: Graph each translation
- Domain 📝
- Exercises: Find the domain
- Graphing polynomials
- Exercises: Graph polynomials
- Graphing rational functions
- Exercises: Graph rational functions
- Logarithmic and exponential functions
- Exercises: Graph logarithmic and exponential functions
- Graph trigonometric functions
- Exercises: Graph trigonometric functions
- Piecewise functions