![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Definition :
\A function is a special type of relation in which each element of the domain is paired with exactly one element of the range.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
The relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bca63fae1efef4ce1cdf6825c21cfdb0.png\")
.
Draw the figure for the given relation.
\The relation is a function because the each element of the domain is paired with exactly one element![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3d7b28f4ec410d4f9f1d1680b5e58a18.png\")
of the range.
The domain of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0c3a6ee180192120787cf4d70d0fb0d9.png\")
.
The range of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=22058609fa8fe203d0477560b4e769e3.png\")
.
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The relation is a function.
\The domain of the relation is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0c3a6ee180192120787cf4d70d0fb0d9.png\")
.
The range of the relation is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=22058609fa8fe203d0477560b4e769e3.png\")
.