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Identification of function: A function is a relation in which each element of the domain is paired with exactly one element of the range.
\Observe the relation in the ordered pair set ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40a8014185f3609dd14e2dc65f3131f3.png\")
, the relation is a function. The each element (x - coordinate) in the domain is paired with exactly one element (y - coordinate) in the range.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
Yes, the relation is a function.