|
For these problems, instead of
just having one answer, like x
= 3
We are going to get a range of
answers, called an interval... Like this:
This means that
x can be 1 ... or
x can be bigger than
1 ...
x can be
2 or
4.671 or
1.00001 or
50,000,000.
One way to write this interval is
(read "x
is
greater
than or
equal to
1" )
So, what would this
mean on a number line?
Just read it!
"x is less than
3."
We put an open dot at
the 3, since
x cannot be
3.
So,
x <
3 means that
x cannot be
3, but it can be a number less than
3... like
2.998 ...
or 0 ... or
-5931.
Continued on the
next
page
|
The printing
and distribution and/or downloading of these lessons is strictly
prohibited. |
|
