Hi Melissa,
In the case of 'rendre visite à quelqu'un' you only conjugate the verb 'rendre' and 'visite' doesn't change , so in the passé composé it would be -
J'ai rendu visite à
Tu as rendu visite à
Il/elle/on a rendu visite à
Nous avons rendu visite à
Vous avez rendu visite à
Ils/elles ont rendu visite à
Hope this helps!
The word visite is a noun in that phrase: rendre visite à qqn.
Chris' answer is very helpful. According to Reverso Dictionary in French, it can translate as a verb to visit, or to pay a visit (noun ). -->. https://dictionnaire.reverso.net/francais-anglais/visite/forced
visitenf (chez qn) visit
every verb is conjugated. to help with your learning you should pick a few popular verbs, find the conjugated lists online and see their English translations to understand why/how to conjugate. also understand there is pasts tenses, future, present, etc. study the "big four" to understand. just google it.
Don't have an account yet? Join today
Test your French to the CEFR standard
Find your French level