Answer:
The method that is valid in finding the unit rate for a proportional relationship is by:
Look at the graph of the relationship. Count the number of units up and the number of units to the right one must move to arrive at the next point on the graph. Write these two numbers as a fraction. The unit rate is the slope, which is the rise over run.
Step-by-step explanation:
 
        
             
        
        
        
area = l x w
area = 9 x 9
area =  81
Hope this was helpful. :-)
 
        
                    
             
        
        
        
110 because avg speed is total distance over total time
        
             
        
        
        
V = -5 because you subtract 4 from both sides then divide both sides by -7 and you get -5
        
                    
             
        
        
        
An angle is formed by two rays with a common endpoint. The endpoint is the vertex. And the two rays are the sides
Example name - PQR Q is the certex