SOLUTION: Solve. Express your answer in interval notation and graph {{{abs(5x-14)>=2x}}}

Algebra ->  Algebra  -> Inequalities -> SOLUTION: Solve. Express your answer in interval notation and graph {{{abs(5x-14)>=2x}}}      Log On

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Question 124674: Solve. Express your answer in interval notation and graph


abs%285x-14%29%3E=2x

Answer by jim_thompson5910(21682) About Me  (Show Source):
You can put this solution on YOUR website!
abs%285x-14%29%3E=2x Start with the given inequality


5x-14%3E=2x or 5x-14%3C=-2x Break up the absolute value


Now let's solve the first inequality 5x-14%3E=2x


5x-14%3E=2x Start with the given inequality



5x%3E=2x%2B14Add 14 to both sides


5x-2x%3E=%2B14 Subtract 2x from both sides


3x%3E=14 Combine like terms on the left side


x%3E=%2814%29%2F%283%29 Divide both sides by 3 to isolate x



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Answer:
So our answer is x%3E=14%2F3 (which is approximately x%3E=4.66666666666667 in decimal form)



Now let's solve the second inequality 5x-14%3C=-2x



5x-14%3C=-2x Start with the given inequality



5x%3C=-2x%2B14Add 14 to both sides


5x%2B2x%3C=%2B14 Add 2x to both sides


7x%3C=14 Combine like terms on the left side


x%3C=%2814%29%2F%287%29 Divide both sides by 7 to isolate x



x%3C=2 Divide

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Answer:
So our answer is x%3C=2


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Answer:

So our two answers are


x%3C=2 or x%3E=%2814%29%2F%283%29



So in interval notation our answer is

(-,2] U [14/3 ,



So if we graph the solutions, we get

drawing%28500%2C50%2C-8%2C15%2C-10%2C10%2C%0D%0Anumber_line%28500%2C-8%2C15%2C+14%2F3%2C2%29%2C%0D%0Ablue%28line%2814%2F3%2C-5%2C14%2F3%2B10%2C-5%29%29%2C%0D%0Ablue%28line%2814%2F3%2C-6%2C14%2F3%2B10%2C-6%29%29%2C%0D%0Ablue%28line%2814%2F3%2C-7%2C14%2F3%2B10%2C-7%29%29%2C%0D%0Ablue%28arrow%2814%2F3%2C-5%2C14%2F3%2B10.2%2C-5%29%29%2C%0D%0Ablue%28arrow%2814%2F3%2C-5.5%2C14%2F3%2B10.2%2C-5.5%29%29%2C%0D%0Ablue%28arrow%2814%2F3%2C-6%2C14%2F3%2B10.2%2C-6%29%29%2C%0D%0Ablue%28line%282%2C-5%2C2-10%2C-5%29%29%2C%0D%0Ablue%28line%282%2C-6%2C2-10%2C-6%29%29%2C%0D%0Ablue%28line%282%2C-7%2C2-10%2C-7%29%29%2C%0D%0Ablue%28arrow%282%2C-5%2C2-10.2%2C-5%29%29%2C%0D%0Ablue%28arrow%282%2C-5.5%2C2-10.2%2C-5.5%29%29%2C%0D%0Ablue%28arrow%282%2C-6%2C2-10.2%2C-6%29%29%0D%0A%29