SOLUTION: help...i need detailed explanation..on this one i am so confused.. f(x)=4x^+2;findf(-1) i know that y is f(x) yes? what does it mean "find f(-1)? i came up with y=2 x=6

Algebra ->  Functions -> SOLUTION: help...i need detailed explanation..on this one i am so confused.. f(x)=4x^+2;findf(-1) i know that y is f(x) yes? what does it mean "find f(-1)? i came up with y=2 x=6       Log On


   

Question 857907: help...i need detailed explanation..on this one i am so confused..
f(x)=4x^+2;findf(-1) i know that y is f(x) yes? what does it mean "find f(-1)?
i came up with y=2 x=6
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=4x^2 ; findf(-1)
------------------
f(-1) = 4(-1)^2 = 4*1 = 4
=====================
Cheers,
Stan H.
---------------------