Final answer:
A home equity line of credit is a type of second mortgage that allows homeowners to borrow against the equity in their home.
Step-by-step explanation:
A home equity line of credit is a type of second mortgage. It is a revolving line of credit secured by the borrower's home. The borrower can access funds as needed, up to a certain limit, and interest is only charged on the amount borrowed. This type of second mortgage allows homeowners to tap into the equity they have built up in their home.