Question

The variables x and y are proportional use the values to find the constant of proportionality. Then write an equation that relates x and y.y=72 x=3y=20 x=12y=45 x=40

Answer 1

For y = 72 and x = 3

k = 1/24

For y = 20 and x = 12

k = 3/5

For y = 45 and x = 40

k = 8/9

Step-by-step explanation:

Given that x and y are proportional,

`x\propto y`

Then

`x=ky`
`k=(x)/(y)`

For y = 72 and x = 3

k = 3/72 = 1/24

For y = 20 and x = 12

k = 12/20 = 3/5

For y = 45 and x = 40

k = 40/45 = 8/9