Main Ideas

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Here are the main points that will be addressed in the videos. Please read these and think about them as you watch.

The concept of constant rate of change is related to the relationship between two variables.
A constant rate of change between $x$ and $y$ means that, for any fixed amount of change $\Delta x$ , the corresponding amounts of change $\Delta y$ are constant.
If $x$ and $y$ represent the measures of two quantities, and $y$ varies at a constant rate of $\dfrac {\Delta y}{\Delta x}$ with respect to x, then the change in y is always $\dfrac {\Delta y}{\Delta x}$ as much as the corresponding change in $x$ .