Question

When x = 12, y = 36. When x = 3, y = 9. What is the constant of proportionality? Enter your answer in the box.

Answer 1

k = 3

Explanation:

the equation relating x and y is

y = kx ← k is the constant of proportionality

to find use the given conditions

k =
`(y)/(x)` =
`(36)/(12)` =
`(9)/(3)` = 3