Question

Find the inverse of the function.

f(x) = 7x + 2

Answer 1

f(x) is same as y
so you can write that equation as \[\huge\rm \color{blue}{y}=7\color{ReD}{x}+2\]
now to find inverse switch y and x \[\huge\rm \color{blue}{x}=7\color{ReD}{y}+2\]
solve for y^

Answer 2

can you solve x =7y +2 for y ?

Answer 3

is it a one to one function?

Answer 4

did you solve that equation for y what did you get ?

Answer 5

no

Answer 6

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

Answer 7

` so put x where y is and x where y is`
so put x where y is and y where x is

Answer 8

x=7y+2
do you know how to solve that equation for y ?

Answer 9

Lol nice

Answer 10

ooooooh so it would be f-1(x) =x-2/7

Answer 11

can you please tell me how u got that ? @zoeg :=)

Answer 12

oh well nvm i've to go
if you mean (x-2)/7
then yes that's right.