Answer
$[1, 2]$
Refer to the image below for the graph.
Work Step by Step
The inequality has $\le$ on the left so a bracket will be used.
The inequality has $\le$ on the right so a bracket will be used.
Thus, the equivalent interval notation of the given inequality is:
$[1, 2]$
To graph this interval, plot solid dots at $1$ and $2$, then shade the region in between.
(refer to the attached image in the answer part above)
