"I am walking straight home."
Translation:Jeg går rett hjem.
https://www.duolingo.com/comment/8751085 > the form without the 'e' is used for when movement towards the home is being described e.g. 'Jeg går hjem' and the form with the 'e' is used to describe position relative to the home e.g. 'Jeg er hjemme'.
https://www.duolingo.com/comment/10025342 > Hjem is used with verbs of motion.