Answer:
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Step-by-step explanation:
Let
x--------> the time in hours
y-------> the distance in miles
we know that
The speed is equal to

in this problem


<u>Equation First Train</u>

<u>Equation Second Train</u>

---------> equation 
Substitute the values of
and
in the equation 

Solve for x


therefore
<u>the answer is</u>

Answer:
linear
Step-by-step explanation:
y - x = 2x - 
= 3x
y = 9x/5
To find the mean just add all the numbers together then divide them by how many numbers there are.
To find the median you have to rewrite the list in numerical order then pick out the middle one which will be your answer
The mode is the number that is repeated more often than the others
For range pick out the largest and smallest number in the group and subtract those, the value you get will be the range :) Hope this helped