PLEASE HELP ME ILL MAKE BRAINLIEST HURRY 
The table below shows a proportional relationship between the cost of movie tickets and number of tickets purchased. 
What is the constant of proportionality? 
A 
5.5
B 
9.5
C 
8.5
D 
17
                                             
                                          
                                          
                                        
											 
			                  