**Graphing inequalities on a number line**

An inequality shows that two expressions are not equal.

The following symbols are used to express inequalities.

The first symbol

**is not equal to**

**≠**, which may also be expressed as, does not, or, is not.

The second symbol is

**greater than or equal to**

**≥**, also expressed as, at least,no fewer than, a minimum of, and no less than.

The next inequality symbol is

**less than or equal to**≤ , it is also expressed as, at most,no more than,a maximum of, and any more than.

Up next is

**greater than**> which is also called, more than.

The last inequality symbol is

**less than**

**<, which is sometimes called,fewer than.**

On a number line if you have an open point means the number is NOT

included in the solution.

For example,

x>3

(x is greater than 3)

A closed point means the number is included in the solution.

x ≥ 3

x is greater than or equal to 3

If the inequality has

"OR," the graph points in two different directions.

If the variable is in the middle of two inequalities, the graph will be between the two

Points

4 < x < 9

Lets look at some more examples

x < 2

Remember the inequality symbol less than will not include the number 2, so it will be open and the 2 will not be included.

x ≥ 10

In order to graph this inequality it will be closed, and the 10 is included because it is greater than or equal to.

Inequalities : When to Flip the Signs

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