Observe that table.
The pattern shows that the y-value is decreased by 100 each time.
You can use this pattern to write a verbal model for the y.
The equation of y is
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/userfiles/image/Library/vinaypa47-p73.gif\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8220a54da0d3948241b1fb36297e3dab.png\")
![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=280b327f05066a7b3f84c8c6ed4b69db.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=280b327f05066a7b3f84c8c6ed4b69db.png\")