Respuesta :

greenforestaz

Step-by-step explanation:

step 1. f(x) = rx + s

step 2. domain of f(x): all x

step 3. f'(x) = lim h->0 (f(x + h) - f(x))/h

step 4. f'(x) = lim h->0 (r(x + h) + s - (rx + s))/h

step 5. f'(x) = r

step 6. domain of f'(x): all x.