Question

Let R be the relation on whole numbers W defined by R = {(x, y); 2x + 3y = 18}, then

(i) Domain of R is {3, 6, 9}

(ii) Domain of R is {0, 3, 6, 9}

(iii) Range of R is {0, 2, 4, 6}

(iv) Range of R is {2, 4, 6}

Answer 1

(ii) and (iii) are correct ✓

Explanation:

When x = 0, 3, 6, 9: y = 6, 4, 2, 0 respectively

When y = 0, 2, 4, 6: x = 9, 6, 3, 0 respectively