Answer:
5
Step-by-step explanation:
(3*x) (3*4)
3x+12=27
-12 -12
3x=15
Divide both sides by 3
x=5
The graph is the space between (and including) the lines
... 5x + y = -1
... 5x + y = 11
just solve by yourself
1/5 is the rightt one