F (x) = 6x - 12; shifts 4 units down.

f (x) = 6x-16

Step-by-step explanation:

Since the function is shifting 4 units down, it will be moving down the y axis, meaning the y-intercept will decrease by 4.

y=mx+b is the formula for the straight line, where b is the y-intercept. The y-intercept in this function is - 12, so we would just subtract - 4 from - 12 to get our answer.

-12-4=-16

Make sure to leave the coefficient of x

Therefore, f (x) = 6x-16