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Example: Graphing the Intersection of and
To visually determine the solution for the compound inequality and , graph each inequality on a number line and locate the intersection. The graph of extends to the right of (not including ), while the graph of extends to the left of (including ). The overlapping region—where numbers are shaded on both individual graphs—forms the solution. Because is not shaded on the first graph, it is excluded from the solution. The number is shaded on both, so it is included. The final solution spans the interval strictly between and up to and including .
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Intermediate Algebra @ OpenStax
Ch.2 Solving Linear Equations - Intermediate Algebra @ OpenStax
Algebra
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