![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Observe the table :
\The line passing through the points ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c2a640c7f1eed09fe50ff9150ba0d7c3.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e02230d43a681f8da20f8d646d1a36e0.png\")
.
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1b8fa3742e0dad8ee9b0bd9558fa63d7.png\")
.
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=34d3b8eea1b2accb4b39d3186fe1a88c.png\")
(Formula for slope)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8697d257557797c209d558c53944a988.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5f890a1c6ac164cec5fe0a879f7da39a.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7803cb294444167bea7686e6cf7b81ed.png\")
)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=109fff68672572476895bd6f63e2f095.png\")
(or) undefined (Simplify)
Therefore, the slope is undefined.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The slope is undefined .