I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

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An inequality can be represented graphically as a region on one side of a line. Key fact Inequalities that use < or > symbols are plotted with a dashed line to show that the line is not included in ...

Show values that satisfy an inequality on a set of axes by drawing the line of the corresponding equation and shading the area specified in a question. Include a dashed line for inequalities where the ...