Organize the ordered pairs in a table. The set of input values matches the domain given in the problem: $\displaystyle{\left\lbrace-{12},-{7},{0},{4},{12}\right\rbrace}\usepackage{cmbright}\Huge\$ . The set of output values matches the range given in the problem: $\displaystyle{\left\lbrace{0},{1},{2}\right\rbrace}\usepackage{cmbright}\Huge\$ . Some of the ordered pairs may have the same y-coordinate, but they only need to be listed once in the set.