Question

Y and x have a proportional relationship, and y=4 when x=12

Answer 1

y =
`(1)/(3)` x

Explanation:

Given that y and x are proportional then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition y = 4 when x = 12 , then

4 = 12k ( divide both sides by 12 )

k =
`(4)/(12)` =
`(1)/(3)`

y =
`(1)/(3)` x ← equation of proportion

Answer 2

multiply 4 by 12 okay bro