Answer:
The answer is d good luck I think yu need it have a blessed day
Answer:
What does ur question mean how to answer it on notebook or pic
If it is perpendicular then the slope of it will be:

y = 1/3 x + b
-1 = (1/3)(3) + b
-1 = 1 + b
b = -2
The equation is:
The answer is -8. hope i helped