0SubIneqLHS-6>RHS-6 |3j-1|>-6 Recalling'>

Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
6. Solving Absolute Value Inequalities
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Exercise 12 Page 91

Solution Set: All real numbers.
Graph:

Practice makes perfect
We are asked to find and graph the solution set for all possible values of j in the given inequality. |3j-1|+6>0 To do this, let's isolate the absolute value expression first.
|3j-1|+6>0
|3j-1|>-6
Recalling that 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. |3j-1|≥ 0 ⇒ |3j-1|>-6 This means any value of j 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.