Question

Give the domain and range of the relation.

{(-5, -2), (-5, -1), (-2, -8), (-4, -6), (4, 4)}

Answer 1

Let,

A × B = {(-5, -2), (-5, -1), (-2, -8), (-4, -6), (4, 4)}

where A and B are the domain and range of the relation respectively.

Well,

$A\times B=\{(x,\ y):x\in A,\ y\in B\}$

This means that the first element of each ordered pair in the relation belongs to the domain and second element of each pair belongs to the range. The definition also says that the set of possible values given to a relation is the domain and the set of all possible results is the range.

Thus,

A = {-5, -2, -4, 4}

and,

B = {-2, -1, -8, -6, 4}

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