Question

Find the inverse of y = 3x - 1.​

Answer 1

Just switch y and x, then solve for it. So the question would be:
x =3y-1
Isolate y, so add 1 to both sides:
x+1=3y
Then, divide both sides by 3:
x+1/3=y
Otherwise known as:
f(x)^-1=x+1/3