In an inverse relationship, when one variable increases, the other___

In an inverse relationship, when one variable increases, the other variable decreases.

Explanation:

Hope this helps! ^^

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

so easy. just google the electromagnetic waves and it’ll pop up.