Section 2.2 Topics:
    Graphs of relations and functions;
        Graphing equations;
        Semicircles;
        Piecewise functions;
        Increasing, decreasing and constant;
        Examples. 

Section 2.3 Topics:
    Families of functions, transformations, and symmetry:
        Translation;
        Reflection;
        Stretching and shrinking;
        The linear family of functions;
        Symmetry;
        Reading graphs to solve inequalities;
        Examples.