![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The given table of ordered pairs.
\| \
x \ | \
\
7 \ | \
\
9 \ | \
11 | \14 | \16 | \
| \
y \ | \
\
4 \ | \
\
2 \ | \
0 | \ ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=90a2dffa4cf28836c23bfcd658a94d29.png\") 3 | \
5 | \
The difference of the x values is 2, and the difference of the y values is 2.
Then the difference equation is y = x.
| \
x \ | \
\
7 \ | \
\
9 \ | \
11 | \14 | \16 | \
| x | \
\
| \
9 | \
11 | \
14 | \
16 | \
| \
y \ | \
\
4 \ | \
\
2 \ | \
0 | \ 3 | \
5 | \
The values of y and x difference is 11.
Then the value of y is 11 defference of x.
\Then the equation of the function f (x) = y = 11x.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The solution of the equation is y = 11x.