Question

given f(x) = ax - b, what is f^-1(x)?

Answer 1

Answer:

A)

Step-by-step explanation:

f(x) = ax + b

y = ax + b

x = ay + b

ay = x - b

y = (x - b)/a

f^-1(x) = (x - b)/a

Answer: A)

Answer 2

x + b/a Replace f(x) with y, interchange x and y and solve for y.