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The system of inequalities are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

Graph:

Graph the inequalities are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ :

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Observe the graph:

The inequalities are shaded region is area of the quadrilateral shown.

The points are $\"\"$ and $\"\"$ .

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Find the area.

The area of the quadrilateral is $\"\"$ .

Substitute $\"\"$ and $\"\"$ .

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Area is $\"\"$ square units.

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Area is $\"\"$ square units.