Suppose you & your friends are going to the movies. the amount of money you spend for tickets varies directly with the number of people buying tickets. if you spend $48 for six tickets ,what is the constant of variation?

This is the equation you need to use: y = kx
So, let's put it this way:
y can be the total amount of money you spend (so $48), and x the number of people (6)

y=kx
48=k*6
k = 48/6
k = 8

The constant variation, and the price of one ticket is 8. 

Same length is comparing because it’s saying its the same and not different