Understanding Rates of Change and Gradient in Graphs

The video tutorial explains the concept of rate of change, which describes how one quantity changes in relation to another. It introduces the gradient of a line as a representation of this rate and provides methods to calculate it, such as using the change in Y over the change in X. The tutorial also covers interpreting the gradient in real-world contexts, like dollars per month. It distinguishes between linear and nonlinear relationships, explaining how to calculate average and instantaneous rates of change using chords and tangents, respectively.

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