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Which function is the inverse of function f? f(x)= x+2/7 A. p(x)=7x-2 B. s(x)=2x+7 C. r(x)=7/x+2 D. g(x)=-x+2/7

Which function is the inverse of function f? f(x)= x+2/7 A. p(x)=7x-2 B. s(x)=2x+7 C-example-1

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To answer this question, we can proceed as follows:

1. We have that the function is:


f(x)=(x+2)/(7)

2. To find the inverse of the function, we can start by interchanging the variables:


y=(x+2)/(7)\Rightarrow x=(y+2)/(7)

3. Now, we need to solve for y as follows:

1. Multiply both sides by 7:


7x=7\cdot(y+2)/(7)\Rightarrow7x=y+2

2. Subtract 2 from both sides of the equation:


7x-2=y+2-2\Rightarrow7x-2=y\Rightarrow y=7x-2

In summary, therefore, the inverse function f is p(x) = 7x - 2 (option A).

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