![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The relation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4a1e297fb0dd50671b7a26496f6ca87e.png\")
.
![\"\"](\"/userfiles/image/Library/Algebra%202/x_co_ordinate_pa_63_po_28.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=02df3cd0916323755ea8c2f42027f6ef.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=ef541b7ae96e27f391979a5f8c607f59.png\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Create a coordinate system and plot the ordered pairs.![\"graph_coordinate_points_(-2_5,1)_(-1,-1)_(0,1).gif\"](\"/userfiles/image/Library/Algebra%202/graph_coordinate_points_(-2_5,1)_(-1,-1)_(0,1).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.
\![\"graph_coordinate_points_(-2_5,1)_(-1,-1)_(0,1).gif\"](\"/userfiles/image/Library/Algebra%202/graph_coordinate_points_(-2_5,1)_(-1,-1)_(0,1)_vertical_line.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
No, the relation is not a function.