You can
put this solution on YOUR website! Describe what the graph of interval[-4,10] looks like
It looks like this:
----------[=========================================]----------
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13
or you can put closed circles at the ends of the number line:
Edwin