5. Inequalities Involving Absolute Value
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compound inequality because the absolute value is greater than the given value.
Solution Set: {r | r<-8 or r>4}
Graph:
Let's isolate r in both of these cases before graphing the solution set.
The solution to this type of compound inequality is the combination of the solution sets. First Solution Set:& r > 4 Second Solution Set:& r< - 8 Combined Solution Set:& r< - 8 or r> 4
The graph of this inequality includes all values less than - 8 or greater than 4. We show this by keeping the endpoints open.