When simplifying a equals what?

Question 3 of 10 (10 points) | Question Attempt: 1 of 1 (a) Show that f(x) =2x-2 defines a one-to-one function. (b) Write an equation for f (x). (c) Graph y =f(x) and y =f (x) on the same coordinate system. Part: 0 / 5 Part 1 of 5 (a) We must show that if f(a) b. X Part: 1 / 5 Part 2 of 5 Assume that f(a) =f(b). That is, 20-2 = X Save For Next Part