Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x . ") This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.
So since the distance (d) is determined by the speed (60 mph) multiplied by the time travelled (t), you would write the equation as
d = 60t
This shows the relationship between the distance and the time you travel at 60 mph. Therefore if you travel for example 2 hours, you will have gone 120 total miles.
I hope this helped :)
Yes. It is a reapting decimal