Question

If R is a relation on the set A = {1, 2, 3, 4, 5, 6, 7, 9} given by xRyy = 3x, then R = 

A. {(3, 1), (6, 2), (8, 2), (9, 3)}

B. {(3, 1), (6, 2), (9, 3)} 

C. {(3, 1), (2, 6), (3, 9)} 

D. none of these.

Answer 1

Option : (D)

Here, 

y = 3x; If x = 1; then y = 3. 

If x = 2; then y = 6. 

If x = 3; then y = 9. 

Therefore the required relation will be R = {(1, 3), (2, 6), (3, 9)}.