SOLUTION: Graph the solution: |3x-1|(greater than equal to) 8

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Question 208131: Graph the solution: |3x-1|(greater than equal to) 8
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

abs%283x-1%29%3C=8 Start with the given inequality


Break up the absolute value (remember, if you have abs%28x%29%3C=+a, then x+%3E=+-a and x+%3C=+a)

3x-1+%3E=+-8 and 3x-1+%3C=+8 Break up the absolute value inequality using the given rule


-8+%3C=+3x-1+%3C=+8 Combine the two inequalities to get a compound inequality



-7+%3C=+3x+%3C=+9 Add 1 to all sides


-7%2F3+%3C=+x+%3C=+3 Divide all sides by 3 to isolate x



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Answer:

So our answer is

-7%2F3+%3C=+x+%3C=+3


So the answer in interval notation is []


Also, the answer in set-builder notation is


Here's the graph of the solution set on a number line:

Graph of the solution set

Note:
There is a closed circle at x=-7%2F3 which means that we're including this value in the solution set
Also, there is a closed circle at x=3 which means that we're including this value in the solution set.