![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The relation is,
\![\"\"](\"/userfiles/image/Library/functionspa77_p10.gif\")
Express the relation as ordered pairs ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2c7c6fe57cf2d33768a25ba08f70e416.png\")
.
Draw a table with two columns and list the x-coordinates in the first column and y-coordinates in the second column. \
| \
x \ | \
\
y \ | \
| \
-6 \ | \
\
5 \ | \
| \
-4 \ | \
\
2 \ | \
| \
-1 \ | \
\
1 \ | \
| \
2 \ | \
\
1 \ | \
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
\
The domain of the relation is the set of all first (x-coordinates) coordinates.
\The domain of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8b13cb1106b7f921527dd53b941711aa.png\")
.
The range of the relation is the set of first (y-coordinates) coordinates.
\The range of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=191431027f51aeebca3c90c8e9e5d9ef.png\")
.![\"\"](\"/userfiles/image/steps_images/step3.JPG\")
Each element of the domain is paired with exactly one element of the range. Therefore the relation is a function and this one-to-one function.![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Yes the relation is a function.