If (see image) then ƒ(2) =
1/3
1
7

http://prntscr.com/cmrbwb

Question

If (see image) then ƒ(2) =
1/3
1
7

http://prntscr.com/cmrbwb

solomonzelman · Answer

You are given that $f(x)=3x+1$.
If you want to find $f(2)$, then plug in $2$ for $x$.

solomonzelman · Answer

For example, if I wanted to find $f(3)$, then this is what I would do.
$f(\color{red}{3})=3\cdot\color{red}{3}+1=9+1=10$

solomonzelman · Answer

$f(2)$ goes the same way, except that you plug in not 3, as I did in my example, but 2.

belban · Answer

thank you

solomonzelman · Answer

You welcome!

belban · Answer

@SolomonZelman what do i do if it is in his type of case, ƒ -1(7) do  just multiply the answer by -1 or...

solomonzelman · Answer

Well $f^{-1}(x)$ is just an inverse function of $f(x)$.

solomonzelman · Answer

You don't need to know that part at all for this question.

solomonzelman · Answer

If you were able to find $f(2)$ (like I did $f(3)$ in my example), then you are done, and that is your answer.