Which of the following describes the graph of {x | 1

Question

Which of the following describes the graph of {x | 1 < x < 2}?



a.open circles on 1 and 2

b.open circles on 1 and 2, arrows pointing out

c.open circles on 1 and 2, line segment between

d.no solution

anonymous · Answer

B: (open circles on 1 and 2,,arrows pointing out)

harrisonshark · Answer

thank you

anonymous · Answer

np ;)

harrisonshark · Answer

just in case anyone wanna add to that

mathmale · Answer

@-StudyShark- :  Mind how you determined that the arrows are pointing outward?

mathmale · Answer

I meant:  Mind explaining how ....

harrisonshark · Answer

Ok now I don't know what to do?

mathmale · Answer

@harrisonshark :  I'd recommend that you graph all four answers and then compare the results to the given set of numbers.

harrisonshark · Answer

ok I'll try

mathmale · Answer

|dw:1392932978098:dw|

harrisonshark · Answer

well this is union and insection algebra so sadly I don't that much about this.

mathmale · Answer

Pls look at the graph I drew.  The second circle was supposed to be around x = 2.
This set of numbers includes ALL numbers not equal to 1 or 2.  Make sense or not?

harrisonshark · Answer

no

mathmale · Answer

Actually, that graph does represent all numbers except 1 and 2.  Unfortunately, this does NOT represent the given set of numbers   1 < x < 2.
So you must eliminate this first answer choice.
Go on to the 2nd answer choice, please, and try graphing it on the number line.

harrisonshark · Answer

K I did I believe it's either b or c

mathmale · Answer

Forgive me, but I'd like for you to graph the second possible answer, as well as the third.  Forget about the fourth possibility.

Willing to do that?  I think the practice is important and worth your time and energy.

harrisonshark · Answer

|dw:1392933641608:dw| is this how I do ?

harrisonshark · Answer

you need to explain how I do it

mathmale · Answer

Yes, except that you're also supposed to draw arrows pointing outward from each 1 and 2.  This means one arrow points to the left, from 1, and the other arrow points to the right, from 2.  Copy your own drawing and update it appropriately.

harrisonshark · Answer

I'm using mac so I don't have a drawing system but ill try like this
     1                           2
<------------------->

harrisonshark · Answer

I do not know how to do this lol

mathmale · Answer

I'm going to steal your drawing and modify it.

harrisonshark · Answer

ok

mathmale · Answer

|dw:1392933882937:dw| shows 2 crude arrows pointing outward, OK?