Expert: Paul Klarreich - 6/12/2009

Question
What does a graph of interval (-4,10) look like?

Answer
Questioner:   Patricia
Country:  United States
Category:  Advanced Math
Private:  No
 
Subject:  graphing
Question:  What does a graph of interval (-4,10) look like?
...........................................................
Hi, Patricia,

It depends on what your teacher expects.  You will want to show that;
1. x = -4 and x = 10 are NOT included.
2. everyhing in between IS.

I expect:

    O<--------------------------------------->O
--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--
   -4           0                            10

The O's are open to show that x = -4 and x = 10 are NOT included.  If they were, -- it would have said [-4,10] -- you would do something else.  (Maybe *'s)