SOLUTION: what does it mean when it says to write a rule for each function? I have the following x f(x) -1 -9 0 -5 1 -1

Algebra ->  Linear-equations -> SOLUTION: what does it mean when it says to write a rule for each function? I have the following x f(x) -1 -9 0 -5 1 -1       Log On


   

Question 34025: what does it mean when it says to write a rule for each function? I have the following
x f(x)
-1 -9
0 -5
1 -1
2 3
I get 1 for x and 4 for f(x) am I going in the right direction?
Answer by xcentaur(357) About Me  (Show Source):
You can put this solution on YOUR website!
when it says to write a rule for each function,
you have to write an expression which will give you the required value for f(x) when you substitute x


meaning,
x f(x)
-1 -9
0 -5
1 -1
2 3


So here you should put (-1) in the expression and you should get (-9)
So you would have to multiply by 9


Sample functions are below,please try to find other ways of doing this as well,because the same expression can be written in at least 3 different ways


x y f(x)
-1 -9 (9x)
0 -5 (x-5)
1 -1 (-x)
2 3 (x-1)


-xC