Question

helppppp

Answer 1

@Krishnadas @Isaiah.Feynman

Answer 2

f(x) = 8x

write it in terms of y.

y = 8x

Switch x and y

x = 8y

solve for y.

y= x/8

rewrite it as f inverse. \[f^{-1}(x) = \cfrac{x}{8}\]

Answer 3

i thought it stays as y

Answer 4

it does stay as y, we switched around the x and y first and RESOLVED for y, and because we resolved for y,we found the inverse function.

Answer 5

Say
f(x) = 8x
f(1) = 8

\(f^{-1} (x) = \cfrac{x}{8}\)
\(f^{-1}(1) = \cfrac{1}{8}\)

Answer 6

so what does it come out to

Answer 7

Read my first post...

Answer 8

x/8

Answer 9

You got it.

Answer 10

it says it was suppose to be y/8

Answer 11

Nope. http://www.wolframalpha.com/input/?i=inverse+f%28x%29+%3D+8x

Answer 12

well idk ugh

Answer 13

That answer would be wrong.

Answer 14

@divagirl when you find inverses you switch the x and y wherever they are. Its that simple!!!