Answer :
m=-6 and y-int of (0,5) gives you y = -6x + 5.
Looking through those other equations, you're looking for variations of that equation.
#1 is NOT.
#2 IS, because -6x + 5 is the same as 5 - 6x.
#3 is NOT.
#4 is NOT.
#5 is NOT.
#6 is NOT.
It looks like #2 is the only one.