Question

Which table has a constant of proportionality between y and x of 1.5

Answer 1

C on Khan Academy. :)

Explanation:

Answer 2

C

Explanation:

In a proportional relationship the constant of proportionality k is

k =
`(y)/(x)`

Check this ratio for each of the values

A

`(7.5)/(5)` = 1.5 ,
`(19.5)/(13)` = 1.5 ,
`(33)/(23)` = 1.4347.... ← Thus not A

B

`(9.5)/(8)` = 1.1875 ← Thus not B

C

`(12)/(8)` = 1.5 ,
`(13.5)/(9)` = 1.5 ,
`(27)/(18)` = 1.5

Thus the table with k = 1.5 is Table C