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