The Answer to the question is B
        
                    
             
        
        
        
Answer:
Let x and y be the two positive integers the Christopher is thinking.
x is equal to 7
and y =20
 
        
             
        
        
        
Answer:
9/2
Step-by-step explanation:
4.5 = 4 1/2 = 9/2
 
        
                    
             
        
        
        
Answer:
j
Step-by-step explanation:
 
        
             
        
        
        
First we take the two points (-7,5) and (-5,9).
Compute the slope: 

Then the linear relation may be in the following form 

Since the point (-7,5) is on the line, then 

The relation is then 

.
We check that the other point are on the above line:

W
e have then a linear relation.