Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
6. Solving Absolute Value Inequalities
Continue to next subchapter

Exercise 5 Page 89

Solution Set: All real numbers.
Graph:

Practice makes perfect
All absolute value expressions are greater than or equal to zero. It follows then that any absolute value expression is greater than all negative numbers.

|n+2|-3≥ -6 ⇒ |n+2|>-3 This means any value of n will satisfy the inequality. Therefore, there are infinitely many solutions, and the solution set is the set of all real numbers. We can represent this graphically on a number line by showing that all values are included in the solution set, so all values are shaded.