![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The table is,
\\
| \
x \ | \
\
y \ | \
| \
7 \ | \
\
13 \ | \
| \
11 \ | \
\
8 \ | \
| \
21 \ | \
\
13 \ | \
| \
35 \ | \
\
20 \ | \
Express the relation as ordered pairs. ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=411a7b304c744ab336d73a5bb3a2e3c3.png\")
![\"\"](\"/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=f03b0c6567bef44f27118340f63267f2.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=1f8148631668ccd6711dcfa7fb2626d3.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.The answer is yes.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The relation is a function.