Inequalities **must **have inequality signs (< or >). In **addition**, it **may **also have equality (=) sign.

For example:

\(\displaystyle y \, > \, mx \, + \, b................it \, has \, only \, inequality \, > \, sign\)

and

\(\displaystyle y \, \ge \, mx \, + \, b................it \, has \, both\, inequality \, (>) \, and \, equal \, (=) \, signs\)