An solid circle is on 3, so the point is include in the graph. The arrow points to the left, so the graph includes all numbers less than 3.
Let x represents all numbers greater than 3.
The inequality is .
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3, so the point is include in the graph. The arrow points to the left, so the graph includes all numbers less than ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=11df3ba034769f9d4266c4eb99bf3e9e.png\")
3.3.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3f228aa2b730fa9bfc43c680ed1d4b48.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.