Pls help it’s due very soon and I don’t understand what it’s asking

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

What term makes it inconsistent y=2x - 4 ?

The population of a small rural town in the year 2006 was 2,459. the population can be modeled by the function below, where f(x residents and t is the number of years elapsed since 2006. f(t) = 2,459(0.92)