Can someone help me with this question? I'm kinda stuck. Could you explain it to me? ASAP?!?!!!!!!!!!

1) Let A= {0, 1, 2, 3} and B={4, 6, 7, 9}. Define a relation R from A to B by the rule: xRy if ∃∈ℤ such that y= mx) Find two points of the relation R.

a)Find two points of the relation R. You can write it in the form xRy.

b) Draw the arrow diagram for R.

c) Is R a function? Explain why or why not?