Hi all,
Don't know if this has been asked before and it maybe a silly question

Can you have a passive ability even though you are not using any of the active ability on a skill line?
i.e Fighters Guild tree line,
Passive ability: Slayer (increases weapon and spell damage by 3% when attacking Daedra and Undead)
I know some passives can be used like Mages Guild:
Passive ability Persuasive will (Allows player to persuade certain NPCs in certain conversations) but was just wondering if other passives can be used which don't require a skill to be used from the skill line.
All the best
JayKay