If f(x) = 9x-8, which of the following is the inverse of f(x)? O A. f'(x) = *19 O B. f'(x) = x; O c. f-'(x) = 48 X-9 O D. f-1(x) = 8

asked Jul 8, 2022 157k views

12 votes

If f(x) = 9x-8, which of the following is the inverse of f(x)?

O A. f'(x) = *19
O B. f'(x) = x;
O c. f-'(x) = 48
X-9
O D. f-1(x) =
8

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14 votes

f(x) = 9x+8
y = 9x+8
x = 8y + 9
x-9 = 8y

x-9
----- = y
8

f-¹ =
x-9
------
8

Fei Qu answered Jul 13, 2022

3.5k points

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