1. Writing and Graphing Inequalities
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For inequalities on a number line, what does it mean when a point is open or closed?
v ≤ -4 Observing the given inequality, we see that all values of v are less than of equal to -4. This means that the solution set lies to the left of -4 on a number line. Furthermore, the inequality symbol indicates that v=-4 is a solution, which we will mark with a closed circle on the number line at -4.