After distributing the -1, you will find
y+7= -x-6
Finally, isolate y to find your answer in the linear form of
y= -x-13
All of them except 8/100 because it results 0.08 or 8%.
The rest:
2/5 = 0.4 = 40%
8/20 = 0.4 = 40%
4/10 = 0.4 = 40%
16/40 = 0.4 = 40%