Question

If x is added to 4 and then multiplied by 2, then the function is f(x) = 2(x +4)

Answer 1

Answer:

a)

Step-by-step explanation:

To find inverse:

replace f(x) with y:   y = 2(x + 4)

Then switch y and x:    x = 2(y + 4)

Finally make y the subject:

x = 2(y + 4)

x/2 = y + 4      (divide by 2)

x/2 - 4 = y       (subtract 4)

So, the inverse is y = x/2 - 4