How is the domain and range determined in the set?

Jason Cross asked Jul 9, 2023

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Jason Cross asked Jul 9, 2023

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13 votes

Given the relation:

$T=\mleft\lbrace(-2,-6),(3,9),(-6,9)\mright\rbrace$

The domain is the set of all the first values in the relation, and the range is the set of all the second values. Then:

$\begin{gathered} \text{domain }=\mleft\lbrace-6,-2,3\mright\rbrace \\ \text{range }=\mleft\lbrace-6,9\mright\rbrace \end{gathered}$

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