Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 6 Page 223

For inequalities on a number line, what does it mean when a point is open or closed?

Practice makes perfect

To graph an inequality on a number line, we need to make note of two things: the direction of the inequality and whether it is strict. x > 5 Observing the given inequality, we see that all values of x are greater than 5. This means that the solution set lies to the right of 5 on a number line. Furthermore, the inequality symbol indicates that x=5 is not a solution, which we will mark with an open circle on the number line at 5.