Question 1006059
f(x) = 5x - 4
1) f(x+h) = 5x +5h - 4
2) f(x) = 5x - 4
3) 5x +5h -4 -5x +4 = 5h
4) 5h / h = 5
therefore the first derivative of f(x) is f'(x) = 5