you drive 30 miles in 1 hour and 120 miles in 4 hours. what is the rate of change.

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Well you know that in order to find the rate you have to divide the distance by the time, right? Right! So you do: 30 divided by 1 which equals 30. Then you do: 120 divided by 4 which also equals 30. So then you already know that there is no rate of change just by looking at it. But just to show you: 30 - 30 = 0 So there you go, no rate of change! Hope this helps! =] R

yep no rate of change

There is no rate of change because the proportions are still the same.