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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 5 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.

-1 ≥ z Observing the given inequality, we see that -1 is greater than or equal to all values of z. This means that the solution set lies to the left of -1 on a number line. Notice that z=-1 is a solution, so we mark this as a closed circle on the number line at -1.

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