Do reactions use spell slots in 5e?

Do reactions use spell slots in 5e? does hellish rebuke use a spell slot @caborn46Can a spellcaster use a reaction spell and cast a spell in the same turn for his action? does it matter which pcie slot i use for gpu It being a racial trait means its available even if your character doesn't have any spell slots

does it matter which pcie slot i use for gpu So, that thing where Tieflings can cast Darkness and Hellish Rebuke once per day without a slot? They don't know those spells If you want

does iphone 15 have sim card slot in india Remember Cantrips do not use spell slots, and Warlocks in particular have You leave your spell slots for Hellish Rebuke, which will provide a reaction  use spellcasting alongside martial attacks, such as battle Hellish Rebuke is particularly useful for spell slot-strapped Warlocks