SOLUTION: solve and graph [3x - 8] >2 I used "[]" in the replacement of the ABSLOUTE VALUE bars I couldn't find them on the key board

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Question 228187: solve and graph

[3x - 8] >2
I used "[]" in the replacement of the ABSLOUTE VALUE bars I couldn't find them on the key board

Answer by jim_thompson5910(21685) About Me  (Show Source):
You can put this solution on YOUR website!

abs%283x-8%29%3E2 Start with the given inequality


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

3x-8+%3C+-2 or 3x-8+%3E+2 Break up the absolute value inequality using the given rule




Now lets focus on the first inequality 3x-8+%3C+-2


3x-8%3C-2 Start with the given inequality


3x%3C-2%2B8Add 8 to both sides


3x%3C6 Combine like terms on the right side


x%3C%286%29%2F%283%29 Divide both sides by 3 to isolate x



x%3C2 Divide


Now lets focus on the second inequality 3x-8+%3E+2


3x-8%3E2 Start with the given inequality


3x%3E2%2B8Add 8 to both sides


3x%3E10 Combine like terms on the right side


x%3E%2810%29%2F%283%29 Divide both sides by 3 to isolate x



x%3E10%2F3 Reduce



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Answer:

So our answer is

x+%3C+2 or x+%3E+10%2F3


which looks like this in interval notation





if you wanted to graph the solution set, you would get

drawing%28500%2C50%2C-10%2C10%2C-10%2C10%2C%0D%0Anumber_line%28+500%2C+-7.33333333333333%2C+12.6666666666667%29%2C%0D%0A%0D%0Ablue%28arrow%28-1.16666666666667%2C-7%2C-10%2C-7%29%29%2C%0D%0Ablue%28arrow%28-1.16666666666667%2C-6.5%2C-10%2C-6.5%29%29%2C%0D%0Ablue%28arrow%28-1.16666666666667%2C-6%2C-10%2C-6%29%29%2C%0D%0Ablue%28arrow%28-1.16666666666667%2C-5.5%2C-10%2C-5.5%29%29%2C%0D%0Ablue%28arrow%28-1.16666666666667%2C-5%2C-10%2C-5%29%29%2C%0D%0Ablue%28arrow%281.16666666666667%2C-7%2C10%2C-7%29%29%2C%0D%0Ablue%28arrow%281.16666666666667%2C-6.5%2C10%2C-6.5%29%29%2C%0D%0Ablue%28arrow%281.16666666666667%2C-6%2C10%2C-6%29%29%2C%0D%0Ablue%28arrow%281.16666666666667%2C-5.5%2C10%2C-5.5%29%29%2C%0D%0Ablue%28arrow%281.16666666666667%2C-5%2C10%2C-5%29%29%2C%0D%0A%0D%0Acircle%28-0.666666666666667%2C-5.8%2C0.35%29%2C%0D%0Acircle%28-0.666666666666667%2C-5.8%2C0.4%29%2C%0D%0Acircle%28-0.666666666666667%2C-5.8%2C0.45%29%2C%0D%0A%0D%0A%0D%0Acircle%280.666666666666667%2C-5.8%2C0.35%29%2C%0D%0Acircle%280.666666666666667%2C-5.8%2C0.4%29%2C%0D%0Acircle%280.666666666666667%2C-5.8%2C0.45%29%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%29 Graph of the solution set in blue and the excluded values represented by open circles