# Chapter 3: A Picture is Worth a Thousand Words

**Advanced**Created by: CK-12

**Introduction**

In this chapter you will learn about linear functions. You will learn what is meant by a function, function notation and how to identify a function from a graph. You will also learn how to graph a linear function by creating a table of values and by plotting the

The chapter will continue with graphing a quadratic function of the form

**Lessons**

In this chapter you will do the following lessons:

- Relation vs Function
- A Function
- Cartesian Graphs
- Graphing a linear function
- Domain and Range
- Graphing the Quadratic Function
y=x2 - Transformations of
y=x2 - Transformational form of
y=x2

- 3.1.
## Relations vs Functions

- 3.2.
## Function Notation

- 3.3.
## The Many Points of the Cartesian Plane

- 3.4.
## Quiz I

- 3.5.
## Graphing a Linear Function Using a Table of Values

- 3.6.
## The Domain and Range of a Linear Function

- 3.7.
## Quiz II

- 3.8.
## Graphing the Quadratic Function y = x²

- 3.9.
## Transformations of y = x²

- 3.10.
## Transformational Form of y = x²

- 3.11.
## Chapter Test