Sometimes things just aren't equal. Or maybe they're absolutely equal. In some extreme cases, things can be absolutely inequal.

Algebra II 6 (D) formulate absolute value linear equations

Algebra II 6 (E) solve absolute value linear equations

Algebra II 6 (F) solve absolute value linear inequalities

Algebra II 7 (I) write the domain and range of a function in interval notation, inequalities, and set notation