### Linear inequalities in one variable

**Examples of linear inequalities**

x > 3

3x ≤ -1

**Graphing linear inequalities**

To graph all the numbers *greater*
than, say, 2, make an *open* circle at 2, and draw an arrow to the right,
like this:

To graph all
the numbers *less than or equal to*, say, 1, make a *closed* circle at
1, and draw an arrow to the left, like this:

To
graph all the numbers that are greater than 1 and less than or equal to 2, use a
combination of open and closed circles:

### Systems of linear inequalities

### Related pages in this website

Procedures

The webmaster and author of this Math Help site is
Graeme McRae.