This document discusses horizontal shifts of functions. It states that a shift of "h" units to the right is represented by (x - h) and a shift of "h" units to the left is represented by (x + h). It provides examples of sketching graphs after a horizontal shift and finding the domain and range of a shifted function. The document also mentions stretching and compressing graphs vertically with "a" and gives examples of writing equations of translated functions in terms of a base function M(x). It concludes by assigning practice problems from page 168.