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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

Chapter Review

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Exercise 3 Page 94

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 > 4 Observing the given inequality, we see that x is all values greater than 4. This means that the solution set lies to the right of 4 on a number line. Furthermore, the inequality symbol indicates that x=4 is not a solution, which we will mark with an open circle on the number line at 4.

Subchapter links

1 Writing and Graphing Inequalities p.94

2 Solving Inequalities Using Addition or Subtraction p.94

3 Solving Inequalities Using Multiplication or Division p.95

4 Solving Multi-Step Inequalities p.95

5 Solving Compound Inequalities p.96

6 Solving Absolute Value Inequalities p.96