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 Skip Navigation LinksMath Help > Extrema and Linear Programming > Linear Programming > 1 Variable Inequalities

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

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