Question

{(x,y)|y = x+3, x, y are natural numbers < 10}
​

Answer 1

Answer:

y=

2

10−x

where both x and y are natural numbers between 1 and 10.

Clearly for x= 2, 4, 6, 8 we get values of xy as 4, 3, 2, 1.

∴ R = ( 2, 4), (4, 3), (6, 2) (8, 1)}

∴R

−1

= {(4, 2) , (3, 4),(2, 6), (1, 8)}

Domain of R is {2, 4, 6, 8}= Range of R

1

Domain of R

−1

is { 4, 3, 2, 1} = Range of R

Answer 2

Answer:

The possible values are:

{(1,4),(2,5),(3,6),(4,7),(5,8),(6,9)}