Does the equation y = 3x+6 represent a proportional relationship?

The graph shows the function f(x) = (2.5)x was horizontally translated left by a value of h to get the function g(x) = (2.5)x–h.

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)

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol