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?
1/4 < p Observing the given inequality, we see that 14 is less than all values of p. This means that the solution set lies to the right of 14 on a number line. Furthermore, the inequality symbol indicates that p= 14 is not a solution, which we will mark with an open circle on the number line at 14.