Question

Anyone please lol ?

Answer 1

The circumference and diameter of a circle

Explanation:

Proportional relationships can be written as
`y=kx`, where
`k` is some constant of proportionality. The formula for a circumference of a circle can be written as
`C=d\pi`, where
`d` is the diameter of the circle. Therefore, the constant of proportionality is
`\pi` and the circumference and diameter of a circle are in a proportional relationship.