Find the domain and range.
-$\{ ( 1,7 ) , ( - 1 , - 9 ) , ( 6,1 ) , ( 6 , - 6 ) \}$
A) domain $= \{ - 1,1,6,16 \}$; range $= \{ - 9,7,1 , - 6 \}$
B) domain $= \{ - 1,1,6 , - 6 \}$; range $= \{ - 9,7,1 , - 6 \}$
C) domain $= \{ - 9,7,1 , - 6 \}$; range $= \{ - 1,1,6 \}$
D) domain $= \{ - 1,1,6 \}$; range $= \{ - 9,7,1 , - 6 \}$

Question

Quizplus · Accepted Answer

The domain of a set of ordered pairs is the set of all first elements, and the range is the set of all second elements. Here, the domain is $\{-1, 1, 6\}$ (note that $6$ appears twice but is only counted once in the domain), and the range is $\{-9, 7, 1, -6\}$.

Find the Domain and Range {(1,7),(−1,−9),(6,1),(6,−6)}\{ ( 1,7 ) , ( - 1 , - 9 ) , ( 6,1 ) , ( 6 , - 6 ) \}{(1,7),(−1,−9),(6,1),(6,−6)}

Find the Domain and Range $\{ ( 1,7 ) , ( - 1 , - 9 ) , ( 6,1 ) , ( 6 , - 6 ) \}$