Question

Select the correct answer.
Which function is the inverse of function
f(x) = -2

Answer 1

B ..................

Answer 2

B

Explanation:

let f(x) = y and rearrange making x the subject

y =
`(x+2)/(7)` ( multiply both sides by 7 to clear the fraction )

7y = x + 2 ( subtract 2 from both sides )

7y - 2 = x

Change y back into terms of x with x the inverse function, that is

p(x) = 7x - 2