This seems straightforward. Is it really as simple as drawing a line from -2 to 3 horizontally parallel to the existing one on the diagram?
lucky you. usually the integers i work with are naughty. i'd draw the inequality $\displaystyle -2 \leq x \leq 3$
you could actually draw any inequality ranging from $\displaystyle -4 \leq x \leq 6$ but encompassing the region $\displaystyle -2 \leq x \leq 3$
do you know how to do that?