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Lerok [7]
2 years ago
14

Consider the following function: f(x)=-3/4x+9

Mathematics
2 answers:
miv72 [106K]2 years ago
8 0

Answer:

f^{-1}(x) =  ( \frac{4y - 36}{-3} )

Step-by-step explanation:

f(x)=-3/4x+9

let f(x) be y .......................to find inverse we have making x the subject.

y = -3/4x+9

y - 9 = -3/4 x

-3x = 4y - 36

x = (4y - 36)/-3

so, f^{-1}(x) =  ( \frac{4y - 36}{-3} )

rusak2 [61]2 years ago
8 0
  • Let y=f(x)

\\ \tt\hookrightarrow y=\dfrac{-3}{4}x+9

\\ \tt\hookrightarrow y-9=\dfrac{-3x}{4}

\\ \tt\hookrightarrow -3x=4y-36

\\ \tt\hookrightarrow x=\dfrac{-4}{3}y+12

Now

\\ \tt\hookrightarrow f^{-1}x=\dfrac{-4}{3}x+12

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