Question: I need help on a problem with speed and distance. Here is the problem: For college visit, Wes must make a 240-mile trip by

I need help on a problem with speed and distance. Here is the problem:

" For college visit, Wes must make a 240-mile trip by car. The time required to complete the trip depends on the speed at which Wes drives, of course, as the table below shows. Fill in the missing entries, and plot points on the grid provided. Do the quantities time and speed vary directly? It makes sense to connect your plotted points with a continuous graph."

On the table given, here are the values

(r) speed : 15, 20, 25, 30, 40, 48, 50, 60, 80

(t) time : 16, 12, 9.6, 8, 6, 5, 4.8, 4, 3

I need help understanding what they mean by vary directly in this problem.

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