The figure shows a relation between the sets $P$ and $Q$. Write this relation in roster form. What is its domain and range?
(N/A) From the figure,it is clear that the relation $R$ is defined as '$x$ is the square of $y$'.
In roster form,the relation is $R = \{(9, 3), (9, -3), (4, 2), (4, -2), (25, 5), (25, -5)\}$.
The domain of this relation is the set of all first elements of the ordered pairs,which is $\{4, 9, 25\}$.
The range of this relation is the set of all second elements of the ordered pairs,which is $\{-5, -3, -2, 2, 3, 5\}$.
In roster form,the relation is $R = \{(9, 3), (9, -3), (4, 2), (4, -2), (25, 5), (25, -5)\}$.
The domain of this relation is the set of all first elements of the ordered pairs,which is $\{4, 9, 25\}$.
The range of this relation is the set of all second elements of the ordered pairs,which is $\{-5, -3, -2, 2, 3, 5\}$.
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