College Algebra

give the domain and the range for the following set of ordered pairs and determine if the ordered pairs represent a function.

A)

(1,2)(3,4)(5,5)(4,4)(5,4)

B)

(4,1)(5,1)(6,1)(7,1)(8,1)

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  1. in each case, all the 1st coordinates are the domain, and the 2nd coordinates are the range.

    If no element of the domain appears more than once, it is a function.

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