Write the inverse function for the function, ƒ(x) = 1/2 x + 4. Then, find the value of ƒ -1(4). Type your answers in the box. ƒ -1(x) = ƒ -1(4) =

asked Aug 20, 2022 204k views

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Write the inverse function for the function, ƒ(x) = 1/2 x + 4. Then, find the value of ƒ -1(4). Type your answers in the box.

ƒ -1(x) =

ƒ -1(4) =

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Answer:

${f}^( - 1) (x) = 2x - 8$

${f}^( - 1) (4) = 0$

Explanation:

$y = (1)/(2) x + 4 = = = > \\y - 4 = (1)/(2) x = = = > \\ 2y - 8 = x = = > {f}^( - 1) (x) = 2x - 8$

$(1)/(2) x + 4 = 4 = = = > \\ (1)/(2) x = 0 = = = > x = 0$

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