Question

Which table shows a proportional relationship between x and y?

x 40 50 60 90

y 8 10 14 18

x 1 2 3 4

y 6 8 10 12

x 2 4 7 8

y 6 10 21 24

x 4 7 8 10

y 2 3.5 4 5

Answer 1

table 4

Explanation:

See attachment for tables .

From the given tables we can see that in table 4 x and y have a directly proportional relationship. Any value of x is always double of y . And hence the proportionality constant is 2 .

`\implies \rm x \propto y \\`

`\implies \rm x = ky`

• with k = 2 .

And we are done!

-Rishabh