Answer:
19
Step-by-step explanation:
 
        
             
        
        
        
Y=3x has a positive slope, and Y=-3x has a negative slope.
        
             
        
        
        
D.11.5 because when you bring the line and the dot it is 11.5
        
                    
             
        
        
        
Answer:
You can try the first one which is the value it can be 5 and the second one can be 4. I can be wrong. 
Step-by-step explanation: