The inequality is written as -3 ≥ x ≥ 9, and the graph of this inequality is in the image at the end.
How to write this inequality?
Here we have the sentence " A number x is at least -3 and at most 9"
So, the smallest value that x can be is -3, and the largest value that it can get is 9, so the inequality can be written as:
-3 ≥ x ≥ 9
To graph this we need a number line, we will have closed circles at -3 and 9, and a line that connects these two closed circles. The graph can be seen in the image below.