You can put this solution on YOUR website! draw a number line like this:
_____________________________
put in the origin (meaning 0):
____________0________________
now do this:
__________-1_0_1_2-3_4_5_____
What the question meant was to draw up the number line and then emphasize the space between 2 and 3 on it being sure to include 2 and 3. So when you do this on paper, draw it up and make heavy dots at 2 and 3. Then make the line heavier between 2 and 3.