![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The functions are ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0dd3848bf5cd350a888740632ec770ff.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=93e86e88c372253187374acf2c8b78e8.png\")
.
The graph of a function meet at the right angle, then they are perpendicular.
\The product of slopes of a two funtion is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9a57928a85e544498a1a6fc34dcb28e2.png\")
if they are perpendicular.
Consider ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0dd3848bf5cd350a888740632ec770ff.png\")
.
The slope of the function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f1ce09a350a536f0b5f2e86456bac763.png\")
.
Consider ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=93e86e88c372253187374acf2c8b78e8.png\")
.
The slope of the function is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=95482e5efbaff14f3bfac916ec4fc76b.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=363b96237e977e668ce20f7f195a683b.png\")
The product of slopes is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=15c6a205b3d7bf613d3ffa67edae4083.png\")
, hence they are perpendicular.
Thus, the graph of a function meet at the right angles.
\The statement is true.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The statement is true.