Whose is a pronoun.
There are two ways of using it:
No, it is not. It is the present participle of the verb "to relate." It can be a verb form, participial, or noun.
It can be used as a noun or adjective NOT a verb, as a noun .. as in "our tenth anniversary" and adjective; of or relating to an anniversary, for example... "an anniversary gift"
Example uses:Who's invited to your party? (Who is invited to your party?)Whose car is blocking the driveway?
The question 'Whose this?' is not correct.Using the interrogative pronoun 'whose' requires a verb:'Whose is this?'Using the pronoun contraction for 'who is' requires an apostrophe: 'Who's this?'
formula
Formula
The answer is Equation!
A mathematical sequence whose verb is equal is the definition for an equation. An equation is given in the form A is equal to B. An equation can contain numbers and variables.
No, "is" is a linking verb, whereas "of" is a preposition.
Used with a person followed by a noun and than a verb
That is relating to religious orders whose members are forbidden to own property and must work or beg for their living
The verb meaning "to write a life story" is spelt as you have done in the question. The noun relating to such a book is biography.