Final answer:
The distance (d) that a skydiver falls varies directly with the time (t) that he is falling. The direct variation equation to model the situation is d = 950t.
Step-by-step explanation:
The distance (d) that a skydiver falls varies directly with the time (t) that he is falling. This can be represented by the equation d = kt, where k is a constant of proportionality. To find the value of k, we can use the given information that the skydiver falls 1900 feet in 2 minutes. Plugging in the values, we have 1900 = k * 2. Solving for k, we find k = 950. Therefore, the direct variation equation to model the situation is d = 950t.