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Here's another one:
Here's the number line:
![a number line showing x is less than or equal to 2, an arrow so going on forever to negative infinity, and a closed dot so ]](images/03-solving-inequalities-23.gif)
The interval notation is
![( negative infinity, 2 ] We use a parentheses because we can't actually equal infinity.](images/03-solving-inequalities-24.gif)
One important thing here:
Notice that we put the 
on the left because you always put the guys in order from left
to right as they appear on the number line.
YOUR TURN:
Write the interval
notation for:
Continued on the
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