The document discusses absolute value and reciprocal functions. It provides examples of graphing absolute value expressions such as |x| = 3, |x| ≥ 3, and |x| < 3. It also gives examples of graphing absolute value inequalities like |x| - 2 < 0 and |x - 5| < 2. Finally, it notes that reciprocal functions have a vertical asymptote at every x-intercept of the original function and references graphs on page 162.