OG详解-OG6 数学2 Q4

Choice A is correct. The graph of function f shows that as x increases, f(x) also increases, which means f(x) is an increasing function. The graph of f is a line, which indicates a constant rate of change. A function that has a constant rate of change is a linear function. Therefore, function f can be described as increasing linear.
Choice B is incorrect. For a decreasing function, as x increases, f(x) decreases, rather than increases. Choice C is incorrect. For a decreasing function, as x increases, f(x) decreases, rather than increases, and the graph of an exponential function isn’t a line. Choice D is incorrect. The graph of an exponential function isn’t a line.