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Understanding |x| and sketching modulus graphs.
Domain, range, and one-to-one vs many-to-one functions.
Applying one function after another with fg(x).
Finding inverse functions and their graphs.
Sketching y = |f(x)| and y = f(|x|).
Applying several graph transformations together.
Solving modulus equations and inequalities.
Work through each topic to complete the section.