What metro are both the Magenta line and Palam metro line part of? 
Palam metro station: The Palam (Hindi: पालम ) metro station is located on the Magenta Line of the Delhi Metro. Magenta Line (Delhi Metro): The Magenta Line (Hindi: मैजेंटा लाइन ) is one of the under-construction lines of the Delhi Metro, a rapid transit system in Delhi, India.
Delhi Metro