Graphing Inequalities on a Number Line

When graphing inequalities on a number line there are conventions for the direction of the line and the end point of the line.

The end point is closed (filled in) when the symbols are

≤ less than or equal to
or
≥ greater than or equal

The end point is open when the symbols are

< less than
or
> greater than

The direction of the line on the graph is determined by whether the amount is greater than (going to the right on the number line) or less than (going to the left on the number line).

If the inequality is written with the variable on the left then the inequality symbol points in the direction of the line.