How to find the domain and range of a function of a graph

The video tutorial explains how to determine the domain and range of a graph. The domain is the set of all possible X values for which the function is defined, while the range is the set of all possible Y values. The tutorial uses a continuous graph to illustrate these concepts, showing that the domain is from -4 to 4 and the range is from 0 to 4. It emphasizes using closed brackets to include boundary values and provides alternative notations for expressing domain and range.

What is the significance of closed brackets when writing the domain?

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Explain how to determine the range of a graph.

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