Q19 of 76 Page 2

Figure 2.15 shows a relationship between the sets P and Q. Write this relation in

a. Set builder form


b. Roster form


c. What is its domain and range?


i. Since 5 – 3 = 6 – 4 = 7 – 5 = 2


∴ x – y = 2 where x P and y Q


So,


R = {(x, y): x – y = 2, x P, y Q}


ii. Now, R = {(5, 3), (6, 4), (7, 5)}


iii. Domain of relation R = {5, 6, 7}


Range of relation R = {3, 4, 5}


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