spell slots when multiclassing
Best Baldur’s Gate 3 Multiclass Warlock Build - Deltia's Gaming
Multiclassing as a Warlock will grant two first-level spell slots that refresh on short rest, allowing you to cast spells like Grease or Magic Missile more often.
Spells in dnd 5e – Comprehensive Spellcasting Guide
However, even if you get access to a 9th level spell slot, multiclassing won't necessarily give you access to a 9th level spell.
Sorcerer | D&D 2024 | Roll20 Compendium
As a Sorcerer, you gain the following spell slots when you reach the specified Sorcerer levels. These spell slots are listed in the Sorcerer Spell Slots table.
Rod of the Pact Keeper DnD 5e - Warlocks Power
You regain all expended spell slots when you finish a long rest. For example, if you know the 1st-level spell Cure Wounds and have a 1st-level and a 2nd-level spell slot available, you can cast Cure Wounds using either slot.