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

The video tutorial explains the concepts of domain and range in mathematical functions. It describes how the domain consists of all possible X values for which a function is defined, and how the range includes all possible Y values that a function can output. The tutorial uses a graph to illustrate these concepts, showing how to determine if a point is part of the domain or range by checking if it corresponds to a point on the graph.

What is the definition of the domain in a function?

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How can you determine if a specific X value is defined in a function?

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What is the significance of negative and positive infinity in the context of domain and range?

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Describe how to find the range of a function.

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What does it mean if a graph has no point for a certain Y value?

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