A passenger rode the subway 2 blocks west and then 10 blocks south. If all the blocks are th same length what is the value of the slope of the line where the passengers came from

Describe the end behavior of the function below. f(x)=(2/3)^x-2 a. as x increases, f(x) approaches infinity. b. as x decreases, f(x) approaches 2. c. as x increases, f(x) approaches -2. d. as x decreases, f(x) approaches negative infinity.