Question

given the function find f(x+h) f(x)=3x-1??​

Answer 1

Answer:

Replace the variable x by x+h.

f(x+h) = 3(x+h) - 1

= 3x + 3h - 1

I think you would have to find

$\frac{f(x + h) - f(x)}{h}$

so I have added few more steps,

$= \frac{3x + 3h - 1 - (3x - 1)}{h} \\ = \frac{3h}{h} = \: 3$