\(\delimitershortfall-1sp\newcommand\abs[1]{\left|#1\right|}\newcommand{\lt}{<}\newcommand{\gt}{>}\)
  1. The solutions of a linear inequality in two variables consist of a boundary line and a .
  2. An inequality that uses or instead of or is called .
  3. If we multiply or divide an inequality by a negative number we must the direction of the inequality symbol.
  4. The shaded region shows all the of the inequality.