How are the variables on the graph related? answer choices: a. as speed decreases, height stays constant. b. as speed decreases, height increases. c. as speed increases, height decreases. d. as speed increases, height increases.

Having a look at the graph, we will find that:
For speed: it is increasing along the x-axis
For height: it is increasing along the y-axis

This means that the function is linearly increasing.

Based on this, the correct choice would be:
D. As speed increases, height increases

According to the graph, g(x) never equals 2.