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Definition of Relations

Express R=x...

Question

Express $R = (x, y), y = 3 x, x \in (1, 2, 3) and y \in (3, 6, 9, 12)$ as a set of ordered pair.

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Solution

$y = 3 x$
$x = 1, y = 3$
$x = 2, y = 6$
$x = 3, y = 9$
So the ordered pairs are
$(1, 3), (2, 6), (3, 9)$

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Definition of Relations

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