Answer: E to E is a tied note
E to G is a sign for hammer on, a technique also used on the guitar
E to D is a sign for pull off, also a technique used on the guitar
Now the important thing to be aware of is these two notes are joined together by a short curvy line which can at least indicate 3 things to the performer.
Slur between 2 identical noted indicates a Tie
Slur between 2 notes in an ascending order indicates a hammer on eg E to F
Slur between two notes in a descending order indicates a pull off eg E to D
Explanation:I hope this answers your question!
