It’s B 
If y-x=6
 Y +X =_10 
then y= 6 + x, instead of y insert this no 
6+ x+ x =-10
6 + 2x =-10 then collect like terms 
2x =-10-6
2x=-16 then multiple both side by 1/2
X=-8 
Y=6+x instead of x insert -8
Y=6-8
=-2
        
             
        
        
        
Answer:
there's one graph I don't see the others 
 
        
             
        
        
        
Yes.    1.403  is  0.003  more than  1.4 .
        
                    
             
        
        
        
Answer: 0.01803155522
Step-by-step explanation: