Question

Find domain and range of { (x, y): x ∈N, y∈N and x+y = 10}

Answer 1

Answer:

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

Step-by-step explanation:

the Domain of R ={1,2,3,4,5,6,7,8,9} and range of R={1,2,3,4,5,6,7,8,9}

Answer 2

x+y=10

y= 10-x

since y∈N , so y>0

then ,

10-x> 0

x<10

Since x∈N,x can take values ={1,2,....9}

Domain of the function ={1,2,....9}

Range of function is y= 10-x , for x={1,2,....9}

Range of function ={1,2,....,9}

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