![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
\
\
The table is
\\
| \
x \ | \
\
0 \ | \
\
3 \ | \
\
6 \ | \
\
9 \ | \
| \
y \ | \
\
12 \ | \
\
30 \ | \
\
48 \ | \
\
66 \ | \
\
Observe the table; value of x is increased by multiples of 3.
\![\"\"](\"/userfiles/image/Library/Value%20of%20x%2038_22.gif\")
Observe the table; value of y is increased by 18.
\![\"\"](\"/userfiles/image/Library/Value%20of%20x%2038%20_22_1.gif\")
![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Write a verbal model for the current situation:
\![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=bfc42ca8823cee3a79b685911e3b3f9d.png\")
\ \
\The equation of y is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=00200b8a3c306c488e77384d594cb36b.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
\ \
The equation of y is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=00200b8a3c306c488e77384d594cb36b.png\")