4. (7.1) What can you say about the solution of the differential equation y' = y - 2? For example, when is the solution increasing, decreasing, or not changing at all? 5. A population of wolves is modeled by the differential equation 21 = 1.2N (1 360 where N(t) is the number of wolves at time t (days). Note, N(t) 2 0 always. (a) (7.1) For what values of N is the population increasing? (b) (7.1) For what values of N is the population decreasing? (c) (7.2) Construct a phase plot of dN (d) (7.2) What are the equilibrium points of - -? Which equilibria are locally stable