![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Observe the mapping figure:
\Domain:
\The domain of the relation is the set of all first (![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
-coordinates) coordinates.
The domain of the relation is![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=66789b267c2eab3c3a7b861da4619450.png\")
.
Range:
\The range of the relation is the set of second (![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b1f02a70f7489dd3b8742e9e1c94d6d0.png\")
-coordinates) coordinates.
The range of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7a09d04053b44902a503ae766c751a69.png\")
.
Function:
\No;
\Because each element of the domain is paired with two element of the range.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
No; the relation is not a function.