Find the domain and range of the function. $\{ ( - 3,8 ) , ( 4,5 ) , ( 7,8 ) \}$
A) $D = \{ - 4,5,8 \} , R = \{ 4 , - 5,8 \}$
B) $D = \{ 4,5,8 \} , R = \{ - 3,4,7 \}$
C) $D = \{ 3,4,7 \} , R = \{ 4,5,8 \}$
D) $D = \{ - 3,4,7 \} , R = \{ 5,8 \}$
E) $D = \{ - 3,4,7 \} , R = \{ 4,5,8 \}$

Question

Quizplus · Accepted Answer

The domain of a function consists of all the first elements in each ordered pair, and the range consists of all the second elements. For the given function, the domain is $\{-3, 4, 7\}$ and the range is $\{5, 8\}$, since these are the unique values from the first and second elements of each ordered pair, respectively.

Find the Domain and Range of the Function {(−3,8),(4,5),(7,8)}\{ ( - 3,8 ) , ( 4,5 ) , ( 7,8 ) \}{(−3,8),(4,5),(7,8)}

Find the Domain and Range of the Function $\{ ( - 3,8 ) , ( 4,5 ) , ( 7,8 ) \}$