Question

How do you do this math problem?

Answer 1

Answer:

-3

Step-by-step explanation:

$f(x) = -3x$

$f(x + c) = -3(x + c) = -3x - 3c$

$\dfrac{f(x + c) - f(x)}{(x + c) - x} =$

$= \dfrac{-3x - 3c - (-3x)}{x + c - x}$

$= \dfrac{-3x - 3c + 3x}{c}$

$= \dfrac{-3c}{c}$

$= -3$

Answer 2

-3 I forgot the explanation but the answer is here!