Find the constant of proportionality (r). Using the value for r, enter an equation that will calculate the cost (y) of x movie tickets in the form of y = rx. The table below shows the cost of movie tickets based on the number of tickets purchased.

Number of TicketsCost
2 $17.00
3 $25.50
4 $34.00
5 $42.50

hi

Step-by-step explanation:

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional