The drug effect in which one drug neutralizes another drug is:

The answer would be an addative.

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

Dis the correct answer thats what i put and it was right