Hi Maiju,

I am not sure what first sentence you are referring to but -

'votre' is 'your' and doesn't have a circumflex accent on it and it will be followed by a noun -

C'est votre frère? =  Is he your brother?

But Le/la vôtre is yours and does have the accent.

Ce livre, c'est le vôtre?  = Is this book yours?

Hope this helps!