Time traveling varies inversely with the average speed. If a train travels between two cities in 4 hours at an average speed of 65 miles per hour. Write the equation for this scenario. Write your answer in the form y=kx or y=k/x

Let "x" represent the average speed of the train and "y" represent the time it takes for the train to travel between the two cities.

According to the given information, we know that the time, "y", taken to travel between the two cities is inversely proportional to the average speed, "x". Therefore, we can write the equation as:

y = k/x

where "k" is the constant of variation.