The relation between N and t is:
N = 200 mi - 50mph*t
this is not a direct variation, as we can see, there is a constant term in the relation.
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Is this a direct variation?</h3>
Remember the relation:
distance = time*speed.
Here we know that the speed of the buss is 50mph, then the relation between the number of miles, N, that you have left to travel after t hours is:
N = total distance - distance traveled in the t hours
The distance traveled in t hours is:
D = 50mph*t
And we know that the total distance is 200 miles, then:
N = 200 mi - 50mph*t
So this is not a direct variation, as we can see, there is a constant term in the relation.
If you want to learn more about direct variations:
brainly.com/question/6499629
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