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Is each relation a function? 1. {(–2, –1), (4, 2), (–8, –4), (6, 3)}
ok :) soo, a group of coordinates is a function when there are no coordinates that have the same x-value but different y-value.
yes it is a function because all elements in domain have a corresponding element in range and no domain has corresponding multiple values in range
so (1, 4) and (1, 5) is not because x is same, but y is different