Identify the domain and range of the relation, and determine whether the relation is a function.
-$$\{ ( - 7 , - 12 ) , ( - 3 , - 5 ) , ( 1,16 ) , ( 8,18 ) \}$$
A) Domain: $\{ - 12 , - 5,16,18 \}$; Range: $\{ - 7 , - 3,1,8 \}$; Function
B) Domain: $\{ - 7 , - 3,1,8 \}$; Range: $\{ - 12 , - 5,16,18 \}$; Not a function
C) Domain: $\{ - 7 , - 3,1,8 \}$; Range: $\{ - 12 , - 5,16,18 \}$; Function
D) Domain: $\{ - 12 , - 5,16,18 \}$; Range: $\{ - 7 , - 3,1,8 \}$; Not a function

Question

Quizplus · Accepted Answer

The domain of a relation consists of all the first elements of the ordered pairs, and the range consists of all the second elements. Since each input (first element) maps to exactly one output (second element) and no input is repeated, the relation is a function.

Identify the Domain and Range of the Relation, and Determine {(−7,−12),(−3,−5),(1,16),(8,18)}\{ ( - 7 , - 12 ) , ( - 3 , - 5 ) , ( 1,16 ) , ( 8,18 ) \}{(−7,−12),(−3,−5),(1,16),(8,18)}

Identify the Domain and Range of the Relation, and Determine $\{ ( - 7 , - 12 ) , ( - 3 , - 5 ) , ( 1,16 ) , ( 8,18 ) \}$