Question

Let A be the set {1,2,3,4,5,6}.Which orders pairs are in the following relations on A.
(v) R5 = {(a,b) : a = 2 and a + 2b ≤ 10}

Answer 1

$$a+2b\leq10, a=2$$

$$b\leq4$$

$$(2, 1), (2,2),(2,3),(2,4)$$