Answer:
y=1/2x
Step-by-step explanation:
The slope of the line goes up by 1 over by 2 each time or 1/2. (Rise over run)
This can be proven by substituting X and Y for a point on the graph.
y=5, x=10
5=1/2(10)
5=5
 
        
             
        
        
        
See the attached picture:
 
        
        
        
Answer:
No, you cannot have the same input for 2 different outputs 
Step-by-step explanation: