Y=mx+b
plug in the point
3=-1*-4+b
3=4+b
b=-1
y=-1x-1
Answer:
-5.5
Step-by-step explanation:

Slope is generally showed by a variable, the variable can be represented by any letter. In this case the variable is represented by x
so the slope is the number that comes before the x, so the slope of this equation is -8
So your answer is A