Posted by Soroban on September 24, 2002 at 16:59:17:
In Reply to: Pre-calculus Graphing Symbol posted by Nichole Blomquist on September 24, 2002 at 03:00:52:
: For anyone who knows: What does a symbol on a graph mean when it looks kind of like this: o-o (A line with open circles at the ends). And what does this symbol mean when it looks like that but the circles are filled in at the ends. Just curious about the answer. Hope to hear from someone soon. Thanks.
It looks suspiciously like "interval notation", Nichole.
I would guess that:
the filled circles mean "including the end points";
the open circles mean "NOT including the endpoints".
Hope that makes sense in the context of your problems.
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