Answer
$\left\{ \left( 4,\ -2 \right),\left( 1,\ -1 \right),\left( 1,\ 1 \right),\left( 4,\ 2 \right) \right\}$
The relation is not a function.
Work Step by Step
A function is defined to be a relation from a set A to a set B if each element in set A is assigned to a unique element in set B.
Reverse each element of the ordered pair and get,
$\left\{ \left( 4,\ -2 \right),\left( 1,\ -1 \right),\left( 1,\ 1 \right),\left( 4,\ 2 \right) \right\}$
Observe and see
The element $1$ from the first component has two different values $-1,\ 1$. From the definition of the function, it implies that the mentioned relation is not a function.
Hence, the reverse component of each ordered pair as mentioned in the question is not a function.
