Answered

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16. If f x = 3x + 4, find f-1 x . A. f-1(x) = 4x – 3 B. F-1(x) =x-4/3C. f-1(x) = x-3/4D. f-1(x) = -3 - 4x

Sagot :

To find the inverse function change all ys' for xs' to find the new inverse function

[tex]y=3x+4[/tex]

interchange the letters

[tex]x=3y+4[/tex]

clear the equation for y

[tex]x-4=3y[/tex][tex]y=\frac{x-4}{3}[/tex]

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