Answer:
0.25 
Step-by-step explanation:
 
        
                    
             
        
        
        
I think it was be 220 because if theres 55 in a 10 stack it should be 55x4
        
             
        
        
        
The standard for of this equation is x – y = 0
Firstly, options A and D are not in standard form, so they are not options. 
To decided between B and C, we choose a point on the line and see if it works. For example, we'll use (2, 2). 
x – y = 0
2 - 2 = 0 
0 = 0 
This is true for option C. Therefore, it is correct.