Solve for the missing term in the proportion

pls help, with solution pls​

1:7 = 2:14 = 3:21 = 4:28 = 5:35 = 6:42

1:2 = 2:4 = 3:6 = 4:8 = 5:10 = 6:12

1:3 = 2:6 = 3:9 = 4:12 = 5:15 = 6:18

1:2 = 2:4 = 3:6 = 4:8 = 5:10 = 6:12

1:8 = 2:16 = 3:24 = 4:32 = 5:40 = 6:48

Step-by-step explanation:

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are