Answer:
top right bottom left
Step-by-step explanation:
Answer:
First then second answer below
Step-by-step explanation:
-x+y 4
-1/-1=1 x=1 y=1
y/1=1/1+4/1
y=1x+4
-x+7y 21
-1/-1=1
7y/7=1/7+21/7
y=1/7x+3
Answer: the last one!! 
Step-by-step explanation:
When there is a line under it means no more than!