AtomicReaper
  • AtomicReaper
(2x+3)≤3
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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lvana
  • lvana
Are you solving for x? Or converting to set notation?
AtomicReaper
  • AtomicReaper
Im not sure this is weird, I think I need two points on a graph.
lvana
  • lvana
Aaahh, I see.~ You simply need to put it in interval notation. So, your answer would be [-3, 0].

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AtomicReaper
  • AtomicReaper
How?
AtomicReaper
  • AtomicReaper
and It says I got it wrong
lvana
  • lvana
Did you place it in the specified brackets?
AtomicReaper
  • AtomicReaper
I used these but hold on let me pass on and maybe you can help with the next one.
AtomicReaper
  • AtomicReaper
(-8x+24) ≤ 16
lvana
  • lvana
Do tell me, does it use | or ( ?
AtomicReaper
  • AtomicReaper
the problem uses | but it usually takes ()
AtomicReaper
  • AtomicReaper
|-8x+24| ≤ 16 Thats how it looks on my screen.
lvana
  • lvana
Now, remember to use the " [] "brackets, because they actually matter. So, your answer would be [1, 5].
AtomicReaper
  • AtomicReaper
Ok that was right. Thanks, but if you don't mind how did you get the answer?
lvana
  • lvana
Allow me to write it out for you.~
AtomicReaper
  • AtomicReaper
ok thank you!
lvana
  • lvana
Do tell me if that helps! Forgive the long wait. http://puu.sh/lZ1bJ/fae1ccaf64.png
lvana
  • lvana
I think...I understood the whole plotting part better in my head. It's meant to be "Plot it!", my bad.~
AtomicReaper
  • AtomicReaper
well uh where did the 1 come from
lvana
  • lvana
The brackets indicate that you can only use numbers 1-5. If you were to put in 0, it would be: 24 ≤ 16 <---- Not true, could never happen.
lvana
  • lvana
Your maximum x value is 5, so the question you need to ask is.."how low can I go?" In this case, the lowest you can go is 1.
AtomicReaper
  • AtomicReaper
So x would equal 2 in this? |-4x-14|≤6
lvana
  • lvana
Actually, it would be -5. I do applaud you on a nice try, though.~
AtomicReaper
  • AtomicReaper
So where did I mess up? I did it like you did it, and I got 2
lvana
  • lvana
Oh, I was mixing myself up with another number. When you work it out, you should get: x = -2
AtomicReaper
  • AtomicReaper
|dw:1450367540087:dw| Why wouldn't it equal pos 2? Two negatives make a positive correct?
lvana
  • lvana
Since -2 is the highest number, you need to find the lowest number. In this case, it would be -5.
lvana
  • lvana
Oh, allow me to show you how I worked it out and why.~
lvana
  • lvana
Here is the way it should be worked out. http://puu.sh/lZ2CP/8c3b67fc00.png The reason as to how I removed the negatives is quite simple. The " |, and |" are absolute value bars. Anything in those bars will come out positive. So, all you need to do is remove the negatives.
AtomicReaper
  • AtomicReaper
Ok well hwo do you tell how low you go? ie -5or 1
maddie82502
  • maddie82502
x=2
lvana
  • lvana
In order to fully comprehend absolute value type equations, you need to know that there is a positive and negative case. I solved the negative case and the answer came to be -2. When solving the positive case: http://puu.sh/lZ2VH/8be16ce42c.png The answer comes out to be -5.
AtomicReaper
  • AtomicReaper
Oh ok I think I have it now. Thanks so much!
lvana
  • lvana
I forgot to flip the sign... http://puu.sh/lZ3b4/fa6e4902e4.png It should look like that!~
AtomicReaper
  • AtomicReaper
Ok cool, I must go due to class change, Thanks again @lvana
lvana
  • lvana
Anytime.~ @AtomicReaper

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