Explanation:
A set of pairs represents a mapping of the first value of the pair unto the second value.
To be a function no mapping in the set can map the same value unto more than one value.
For example, if
k
=
7
in the given set,
then
XXX
→
5
because of the pair
(
,
)
and
.XXX
4
⇒
this would not be a function.
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Verified answer
Explanation:
Explanation:
A set of pairs represents a mapping of the first value of the pair unto the second value.
To be a function no mapping in the set can map the same value unto more than one value.
For example, if
k
=
7
in the given set,
then
XXX
7
→
5
because of the pair
(
7
,
5
)
and
.XXX
7
→
4
because of the pair
(
k
=
7
,
4
)
⇒
this would not be a function.
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