You eliminate or ‘take away’ the answers that you know or think that r wrong. The last answer that’s left is your answer.
We are going to need more contex to awnser this
Answer:
(y+1)/5
Step-by-step explanation:
you meant f^-1(x) ?
let y= 5x-1
Make x subject of formula
y+1=5x
x=(y+1)/5
f^-1(x)=(x+1)/5 replace y by x
Answer: -2 and -1
You have the correct answer.
Oh god not again.....................
