![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
Observe the graph:
\The graph is a slant line that crosses the ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8da2268e35b6b6daab9c47f71c4c8bf4.png\")
-axis at ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=15c6a205b3d7bf613d3ffa67edae4083.png\")
and ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b1f02a70f7489dd3b8742e9e1c94d6d0.png\")
- axis at ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d19ea8dec317fbe5a411fa4b88fab0db.png\")
.
It is the parent function of most linear functions shifted -axis ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2fe8e014baf52b2f5eb8b0d4d14d504d.png\")
.
Therefore, the graph represents a linear function.
\Its domain and range are all real numbers.
\![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The graph represents a linear function.