It’s C. I hope this helps
        
             
        
        
        
Answer:
 
              
           
          
Step-by-step explanation:
Given
The attached graph
Required
Equations with higher unit rate
First, calculate the unit rate of the graph

Where:


So:



For the given options.
The unit rate is the coefficient of x
So: 
Going by the above definition of unit rate.




















The unit rates grater than the graph's from small to large are:
 
              
           
          
 
               
            
            
 
        
                    
             
        
        
        
 i can help, but you need to write the whole question.. 
 
        
             
        
        
        
Answer:
a control group is not used 
 
        
             
        
        
        
Answer:
1. f(x,y) = (x, -y) 2. f(x,y) = (-x,y).
Step-by-step explanation:
I hope that helps