(-8, -5)
To form a rectangle, all the lines must be perpendicular and parallel. If you draw out the points on a coordinate plane then you can find the answer pretty easily. 
Also, this one is easy because all the lines are vertical or horizontal, and when that is the case then you can just see which number in the set hasn't appeared twice (1 appeared twice as an <em>x</em> value, 0 appeared twice as a <em>y </em>value, but -8 has only appeared once as an <em>x</em> and -5 has only appeared once as a <em>y </em>value)
        
             
        
        
        
Answer:
11
Step-by-step explanation:
55/5 equals 11
 
        
                    
             
        
        
        
Answer:
1. No
2. No
3. Yes
4. No
Step-by-step explanation:
The first one isn't  proportional because it doesn't  start at 0 
The second one isn't proportional because there isn't  a pattern between  the coordinates
The 3rd one is a proportional relationship because it starts at 0 and there is an equal amount of space between each coordinate and there is evidentially a pattern.
Finally, the  4th one isn't proportional because the last coordinate doesn't correspond w/ the others
Plz mark me brainliest if correct :)
 
        
             
        
        
        
The answer for this problem is 4