Question

Find the inverse of the function. F(x)=6-3x

Answer 1

So far I have f(x)=x-6/-3... I need it in y=mx+b.

Answer 2

@DangerousJesse @Nnesha

Answer 3

F(x) = y
y=x-6/3
3y=6-x
3y-6=-x
x=6-3y
F'(x) = 6 -3x

Answer 4

heres what i have..

Answer 5

\(\large y=6-3x\)

\(\large y-6=-3x\)

\(\large 3x=6-y\)
\(\large x=\dfrac{6-y}{3}\)
\(\large hence~~f'(x)=\dfrac{6-x}{3}\)

Answer 6

but how can i get rid of the 3 in the denominator? can i still verify the inverse with the 3, or will i have to do something with it?

Answer 7

it can be written as further

\(\large f'(x)=2-\dfrac{x}{3}\)

Answer 8

nothing can be done with 3 ,it resides

Answer 9

okay, thanks!

Answer 10

welcome