Chapter 2 - Graphs and Functions - 2.3 Functions - 2.3 Exercises - Page 215: 18

The given relation defines a function.

Work Step by Step

RECALL: A function is a relation whose every first coordinate is paired with only one second coordinate. In the given relation, every first coordinate $(x)$ is paired with only one second coordinate $(y)$. Thus, the given relation defines a function.

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