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Which rational function models the time, y, in hours, that it takes the train to travel between the two cities at an average speed of x miles per hour?

y= x/6.4
y= x/160
y= 6.4/x
y= 160/x​

2 Answers

2 votes

Answer:

y=160/x

Explanation:

other answer is wrong. i just did this question

User Oz
by
7.8k points
6 votes

Answer:


y=(x)/(6.4)

Explanation:

The complete question in the attached figure

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form
k=(y)/(x) or
y=kx

In this problem, we have a proportional relationship between the average speed (x) and the time (y)

Find the constant of proportionality k

Fox =32, y=5


k=(5)/(32)

substitute


y=(5)/(32)x

we have


(5)/(32)=(1)/(6.4)

therefore


y=(x)/(6.4)

Which rational function models the time, y, in hours, that it takes the train to travel-example-1
User Ayal Gelles
by
7.5k points

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