![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=41be28fbabdc7af619210869e3f27d69.png\")
.The equation is .
Vertical line test :
\Graph the equation ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=41be28fbabdc7af619210869e3f27d69.png\")
.
Draw a vertical line at ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=470fba7ef163eea32bffc90ff6549cc1.png\")
.
Graph :
\\
Observe the graph :
\The vertical line intersects the graph of the function at exactly one point.
\Therefore, the graph of the equation represents ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b1f02a70f7489dd3b8742e9e1c94d6d0.png\")
as function of ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
.
The equation represents as function of .