2.6: Graphing Inequalities - Mathematics LibreTexts
https://math.libretexts.org/Courses/Lumen_Learning/Beginning_Algebra_(Lumen)/02%3A_Graphing/2.06%3A_Graphing_Inequalities
WEBSep 27, 2020 · Graphing Inequalities. To graph an inequality: Graph the related boundary line. Replace the <, >, ≤ or ≥ sign in the inequality with = to find the equation of the boundary line. Identify at least one ordered pair on either side of the boundary line and substitute those \((x,y)\) values into the inequality.
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