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11-05-2018
Mathematics

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What is the inverse of the function 4x-9

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11-05-2018

[tex]f(x) = 4x - 9[/tex]

[tex]\text {Let } y = 4x - 9[/tex]

[tex]4x = y + 9 [/tex]

[tex]x = \dfrac{y+9}{4} [/tex]

[tex]f^{-1}(x )= \dfrac{x+9}{4} [/tex]

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