Question 499054
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.