Graphing on a number line?? Inequalities??

[juliadeee11]

I have a question about something but I cant remember what it is called. It is when you draw a graph but its only a straight line on like a number line. There is a circle on one end usually and it is either filled in or open and an arrow on the other. I think it invloves when something is greatern than or equal to or something. Can you please explain how to draw them and read them.

 

[galactus]

Yes, you're on the right track. The closed circle means \(\displaystyle {\leq} \;\ or \;\ {\geq}\)

The open circle means < or >

 

[masters]

Can you please explain how to draw them and read them.

Start here: http://www.sparknotes.com/math/algebra1 ... ion4.rhtml

That's a pretty good explanation.

Or here: http://www.mathnstuff.com/math/algebra/ainequ.htm

There are lots of other sites out there to help. Just google "number line inequalities" or "graphing number line inequalities"