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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 4 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.

y ≤ 2 Observing the given inequality, we see that all values of y are less than or equal to 2. This means that the solution set lies to the left of 2 on a number line. Notice that y=2 is a solution, so we mark this as a closed circle on the number line at 2.

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