Answer:
4
Step-by-step explanation:
 
        
             
        
        
        
I think it is B, but I'm not fully sure.
        
             
        
        
        
Answer:
-1
Step-by-step explanation:
Slope= rise/run
Since the line is decreasing, it will be negative.
 
        
             
        
        
        
The answer is C because if you substitute in X-6 for the y in the first equation (since X-6 is also equal to y), you get 2x=16 which means x=8. There is only one option where 8 is equal to X, but just to check you can substitute it back into either of the original equations to make sure that y=2.
        
             
        
        
        
Answer:
7:2
7/2
Step-by-step explanation:
7:2 is also equivalent to 7/2