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Which function is the inverse of f(x) = -5x—4

User SGD
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1 Answer

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16 votes

Answer: f^-1(x)= - 1/5x - 4/5

Explanation:

substitute y for f(x): y= -5x-4

interchange x and y: x=-5y-4

swap the sides: -5y-4=x

move the constant -5y=x+4

divide both sides by 5 y= - 1/5x - 4/5

substitute f^-1(x) for y f^-1(x)= - 1/5x - 4/5

User Nasmorn
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