Question

Let V be the set of vertices in G and let E be the set of edges in G. This graph describes a function
i : E → V × V
where
i(e) = (a, b)
if edge e goes from vertex a to vertex b.

List the values of
i(e1), i(e2), ... , i(e8).
See Screenshot :)

Answer 1

e1 goes FROM a TO b, what are the names of a and b?

Answer 2

find the edge (the arrow) that is labeled as "e1": see where it starts at, and where it ends at.

do that for all the edges (arrows) that are labeled

Answer 3

so e1 would be w, v?

Answer 4

or v, w?

Answer 5

almost :)

starts at "a", ends at "b"
starts at v , ends at w

Answer 6

oh yes its w, v...
got it!! thanks again :)))

Answer 7

v,w is correct