# Need help with 1 question on functions

• Mar 11th 2008, 04:44 AM
falz923
Need help with 1 question on functions
i have a problem labeled given P(x) = 4x+7, write P(-2+h) - P(-2) in simplest form.

For this question i need not the answer to the method of solving this sort of function. I have done many function problems, but am confused on this one.
• Mar 11th 2008, 04:47 AM
colby2152
Quote:

Originally Posted by falz923
i have a problem labeled given P(x) = 4x+7, write P(-2+h) - P(-2) in simplest form.

For this question i need not the answer to the method of solving this sort of function. I have done many function problems, but am confused on this one.

Plug and chug my friend!

$P(x) = 4x+7$

$P(5-y) = 4(5-y)+7 \Rightarrow 20 - 4y + 7 = 27 - 4y$