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The set of all y-coordinates is called the

User KayV
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The domain is the set of all first elements of ordered pairs (x-coordinates). The range is the set of all second elements of ordered pairs (y-coordinates). Only the elements "used" by the relation or function constitute the range.
User Shawn Mclean
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The set of all y-coordinates is called the range.
User Rajesh Panchal
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