Mathematics
7 Online
OpenStudy (anonymous):
Okay, I need help with a problem but have to use the math thing.
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jimthompson5910 (jim_thompson5910):
you can use the equation editor, or you can draw the problem
also, you can attach the image of the problem (screenshot or camera shot of the problem)
OpenStudy (anonymous):
\[\frac{ 1 }{ 2 } \le x \le 0\] How do I solve this?
OpenStudy (anonymous):
Oh, that's a negative 1/2!
jimthompson5910 (jim_thompson5910):
so
\[\Large -\frac{1}{2} \le x \le 0\]
right?
OpenStudy (anonymous):
Yes, sorry for the mistake!
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jimthompson5910 (jim_thompson5910):
it's ok
jimthompson5910 (jim_thompson5910):
so what do you need to do with this inequality?
OpenStudy (jdoe0001):
looks to me it doesn't need solving
OpenStudy (anonymous):
It's asking me to Choose the correct absolute value inequality and graph for the solution.
OpenStudy (anonymous):
I can't screen shot though...
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jimthompson5910 (jim_thompson5910):
it's too big to screenshot?
OpenStudy (anonymous):
No, I just can't figure out how to screen shot with a mac.
jimthompson5910 (jim_thompson5910):
oh one sec
OpenStudy (anonymous):
The first answer is |4x+1|\[\le 1\]
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OpenStudy (anonymous):
Thanks.
jimthompson5910 (jim_thompson5910):
go ahead and post whenever you're ready
OpenStudy (anonymous):
jimthompson5910 (jim_thompson5910):
ok we can look through these choices and find the proper graph to start off
jimthompson5910 (jim_thompson5910):
how do we graph
\[\Large -\frac{1}{2} \le x \le 0\]
what's it going to look like on a number line?
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OpenStudy (anonymous):
I don't understand what to do with the fraction or how to distribute.
jimthompson5910 (jim_thompson5910):
\[\Large -\frac{1}{2} \le x \le 0\]
means that x is between -1/2 and 0 (including both endpoints)
jimthompson5910 (jim_thompson5910):
how do we represent that on a number line?
OpenStudy (anonymous):
Well, one dot one on half and another on zero, both meeting at -1/2?
jimthompson5910 (jim_thompson5910):
|dw:1403560783560:dw|
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jimthompson5910 (jim_thompson5910):
Plot closed circles at -1/2 and 0
|dw:1403560828273:dw|