In a population of deer in one year, six deer were born, five deer emigrated, three deer were killed by predators, and one deer immigrated. what can be determined from this information?

The information that can be determined from the question is that the growth rate is negative and that population size decreases. The growth rate = birth rate – death rate + immigration rate – emigration rate. From the question, birth rate = 6, death rate = 3, immigration rate = 1, and emigration rate = 5. The growth rate = 6 - 3 + 1 - 5 = -1. So, the growth rate is negative which suggests that the size of deer population decreases.

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