If f(x) = 12x – 7, what is f–1(x) ?

Question

apoorvk · Answer

so y=12x-7

now write 'x' in terms of 'y', and then interchange 'x' and 'y'. the resulting function is the inverse function of f(x).

anonymous · Answer

i just need the answer

parthkohli · Answer

f-1(x) is the inverse of f(x)

x = 12y - 7
x + 7 = 12y
$x + 7 \over 12$ = y

y is the inverse.

parthkohli · Answer

Therefore,


$\Large \color{purple}{\rightarrow f^{-1}(x) = {x + 7 \over 12} }$

anonymous · Answer

so x-12 over 7?

anonymous · Answer

or is x+7/12 the answer

apoorvk · Answer

Sorry, but we don't just give the answers here. This is a tutoring website, not an answering one. It'd rather help you if you could learn the method - rather than just 'copying' the answers.

anonymous · Answer

i have one question left on my paper and im frustrated and just want to get it over with