<PRE><B>Question 94343</B>
I have a chart like this:

n       1   2   3   4   5
f(n)    -3  0   3   6   9

I need to determine
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Since there is a common difference of 3 in the f(n) row the
funcion is linear.
Form y = mx+b
Pick two points and find the linear equation.
If you pick point (2,0) and (5,9)
slope = m = 9/3 = 3
Substituting into y=mx+b you get:
9 = 3*5+b
b = -6
EQUATION: 
f(n) = 3n-6
Test this with a few of the points and you will see it is correct.
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Cheers,
Stan H
</PRE>