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?
-1 > t Observing the given inequality, we see that -1 is greater than all values of t. This means that the solution set lies to the left of -1 on a number line. Furthermore, the inequality symbol indicates that t=-1 is not a solution, which we will mark with an open circle on the number line at -1.