Answer:
y = -16.25
Step-by-step explanation:

It can also be written as

-8y = 26 * 5
-8y = 130
y = 130/-8 = - 65/4 = -16.25
P=2L+2W and L=2W-5
2(2W-5)+2W=50
4W-10+2W=50
6W-10=50
6W=60
W=10
Answer:
The farthest left box.
Step-by-step explanation:
In order for a relation to be a function, the order of numbers must be constant from the input to the output. The other numbers do not have a consistent value, but the one on the far left is x=+5 and y=-5, and it continues this way throughout the relation.
Hopefully this helped!