7) [10] Let A = {1,2,3,4}. Define the relation R on A by aRb if and only if a > b - 1. a) List the elements of R. b) Use technology to create a digraph. Paste to the right. (6 points) You will earn half credit for a hand drawn picture. A nice free program: graphonline.ru/en/ c) Is R reflexive? Why or why not? d) Is R transitive? Why or why not?

Fig: 1