Hide/show actions on user input from checkboxes

Hide/show actions on user input from checkboxes

Im trying to hide and show a few fields based on if checkboxes are checked or not checked. I have the fields hidden initially on form load. I also successfully show the fields when the option is checked. My problem is i dont know how to make those fields disappear if i uncheck that box... what would be the best way to approach the opposite function of input.contains()?
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ON LOAD
 
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ON CHECK
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ON UNCHECK
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SCRIPT - ACTIONS ON USER INPUT