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 and means that, for any fixed amount of change , the corresponding amounts of change are constant.
- If and represent the measures of two quantities, and varies at a constant rate of with respect to x, then the change in y is always as much as the corresponding change in .