Interest on home equity loan used to buy rental property?

noidem asked: If I have a home equity loan secured by my main home, and the proceeds are used to buy rental property, is the interest expensed in Schedule E or does it go on Schedule A?

Can I pay off my bank loan on a rental property with a private loan from my mother, if she is the renter?

jpp asked: There is a rental agreement, and the loan will be recorded against the property. I declare her rent as income, and she would declare the interest on the loan as income.