Which ordered pair needs to be removed in order for the mapping to represent a function?
(–3, –4)
(–2, –1)
(1, –3)
(3, 7)

The correct answer is option A which is ( -3, -4)
A function is defined as the expression that set up the relationship between the dependent variable and independent variable.
We can see in the given image two inputs are having the same output which is for -3 and 0 the value of the output is the same -4. So we have to remove one pair. We have to remove (-3,-4).
Therefore the correct answer is option A which is ( -3, -4)
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