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03-03-2020
Mathematics

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Which function is the inverse of f(x) = -5x-42

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goddessboi goddessboi

03-03-2020

Answer:

f'(x)=-(x+42)/5

Step-by-step explanation:

Rewrite f(x) as y:

y=-5x-42

Flip x and y and solve for y:

x=-5y-42

x+42=-5y

(x+42)/-5=y

So the inverse function is f'(x)=-(x+42)/5 (note that f' means inverse)

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