17. Because 7 plus 4 equals 11 and if you add 6 you get 17
        
                    
             
        
        
        
Answer:
I think it is not proportional because the line is supposed to go thro the middle of each dot, and some of the dots don't have a line thro the middle only on the side or not even on the dot.
Hope this helps!
Step-by-step explanation:
please mark me brainliest...
 
        
             
        
        
        
20
Constant in a mathematical expression is a term whose value never changes.
The terms with x and y will vary based on the variable x and or y.
        
             
        
        
        
Their least common multiple is  90 .
90 = 5 x 18
90 = 2 x 45