anonymous
  • anonymous
Find the inverse of the function. f(x) = 7x + 2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Nnesha
  • Nnesha
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^
Nnesha
  • Nnesha
can you solve x =7y +2 for y ?
anonymous
  • anonymous
is it a one to one function?

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Nnesha
  • Nnesha
did you solve that equation for y what did you get ?
anonymous
  • anonymous
no
Astrophysics
  • Astrophysics
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)
Nnesha
  • Nnesha
` so put x where y is and x where y is` so put x where y is and y where x is
Nnesha
  • Nnesha
x=7y+2 do you know how to solve that equation for y ?
Astrophysics
  • Astrophysics
Lol nice
anonymous
  • anonymous
ooooooh so it would be f-1(x) =x-2/7
Nnesha
  • Nnesha
can you please tell me how u got that ? @zoeg :=)
Nnesha
  • Nnesha
oh well nvm i've to go if you mean (x-2)/7 then yes that's right.

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