Question

suppose that the relation T is defined as follows. T={(7,-8),(-1,-8),(2,7)} Give the domain and range of T.

Answer 1

Remember that the domain is the set of all the possible x-values.

Similarly, the range is the set of all the possible y-values.

This way, we'll have that:

$\begin{gathered} Dom(T)=\mleft\lbrace-1,2,7\mright\rbrace \\ Ran(T)=\mleft\lbrace-8,7\mright\rbrace \end{gathered}$