Question

A.identify the domain and range and determine it is function or relation


Set of Ordered Pairs

((5,4),(4,3),(3,2),(3,1))
((-2,3),(-1,3),(2,1)(1,1))
(-1,1),(0,0),(1,1),(-2,4),(2,4)





Domain






Range






Relation/Function​

Answer 1

Answer:

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Step-by-step explanation:

In domain and range of a relation, if R be a relation from set A to set B, then

• The set of all first components of the ordered pairs belonging to R is called the domain of R.

Thus, Dom(R) = {a ∈ A: (a, b) ∈ R for some b ∈ B}.

• The set of all second components of the ordered pairs belonging to R is called the range of R.

Thus, range of R = {b ∈ B: (a, b) ∈R for some a ∈ A}.

Therefore, Domain (R) = {a : (a, b) ∈ R} and Range (R) = {b : (a, b) ∈ R}

Note:

The domain of a relation from A to B is a subset of A.

The range of a relation from A to B is a subset of B.