4 Functions and Graphs

In This Chapter

4.1 Functions and Graphs

4.2 Symmetry and Transformations

4.3 Linear and Quadratic Functions

4.4 Piecewise-Defined Functions

4.5 Combining Functions

4.6 Inverse Functions

4.7 Building a Function from Words

4.8 Least Squares Line

Chapter 4 Review Exercises


The correspondence between the students in a class and the set of desks filled by these students is an example of a function.

A Bit of History If the question “What is the most important mathematical concept?” were posed to a group of mathematicians, mathematics teachers, and scientists, certainly the term function would appear near or even at the top ...

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