The Building Blocks of Pre-Calc: Functions
In This Chapter
Identifying, graphing, and translating parent functions
Piecing together piece-wise functions
Breaking down and graphing rational functions
Performing different operations on functions
Finding and verifying inverses of functions
Maps of the world identify cities as dots and use lines to represent the roads that connect them. Modern country and city maps use a grid system to help users find locations easily. If you can’t find the place you’re looking for, you look at an index, which gives you a letter and number. This information narrows down your search area, after which you can easily figure out how to get where you’re going.
You can take this idea and use it for your own pre-calc purposes through the process of graphing. But instead of naming cities, the dots name points on the coordinate plane (which we discuss more in Chapter 1). A point on this plane relates two numbers to each other, usually in the form of ...