Answer:
For a uniform move, the traveled distance equation is
y = v*x
where "v" is the average speed (or rate), in miles per minute, x is the time, in minutes.
To find "v" from the given data, divide 455 miles by 65 minutes (the flight time between the cities)
v = 455%2F65 = 7 miles per minute.
So, finally, your equation is
y = 7x.