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F(x)=5x-7. Find f^-1(-2)
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F(x)=5x-7. Find f^-1(-2)

User Therealjumbo
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2 Answers

1 vote

Answer:

The answer to the question is 1.75

User Laurena
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4 votes
An inverse function must first be rearranged.
Essentially solving for y now instead of x

f(x)=5x-7 —> y=5x-7
f(y)=(y+7)/5 —> x=(y+7)/5
f(-2)=(-2+7)5 —> f(-2)=5/5

Answer:
f(-2)=1
User Mike Metzger
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