Question

R is a relation in the set a={1,2,3,...,15} such that R={(x,y):y=3x} find the domain and range or R

Answer 1

hope it helps you. ............

Answer 2

Given,

R = {(x,y): y = 3x}, a = {1,2,3,...15}

R = {(1, 3), (2, 6), (3, 9), (4, 12), (5, 15)}

Thus,
Domain of R, d(R) = {1, 2, 3, 4, 5}

Range of R, r(R) = {3, 6, 9, 12, 15}