The ordered pair that does not represents a function is as follows:
{(1,−8),(8,−2),(−7,−4),(−7,3)}
What is a function?
A function relates an input to an output.
A function relates each element of a set with exactly one element of another set (possibly the same set).
A function is defined with a domain (the set of input values that it takes) as well as a codomain or range (the set of possible values it can return).
A function has to return a value for each element of the domain.
Therefore, the ordered pair that does not represents a function is as follows:
{(1,−8),(8,−2),(−7,−4),(−7,3)}
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