![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=27e86debf1296aaab3f1d9a607510ac5.png\")
\
![\"\"](\"/userfiles/image/Library/Algebra%202/x_co_ardinate_pa_63_po_25.gif\")
\ \
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=6b75e9ac675e2c4cda99333e3a4a9cfc.png\")
\ \
The range of the relation is the set of second (y-coordinates) coordinates.
\The range of the relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bb0e1d948d161459952438152f96511e.png\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Create a coordinate system and plot the ordered pairs.
\![\"\"](\"/userfiles/image/Library/Algebra%202/xy_co_ordinate_pa_63_po_25.gif\")
![\"\"](\"/userfiles/image/steps_images/step3.JPG\")
Draw the vertical lines through the points. Observe that one
\vertical line passes through more than one point.
\This graph fails the vertical line test.
\![\"\"](\"/userfiles/image/xy_co_ordinate_2_pa_63_po_25.gif\")
One element of the domain is paired with two elements of the range.
\Therefore the relation is a not a function.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
No, the relation is not a function.
\