Write the rule for the relation shown by the arrow diagram 

 

Write the rule for the relation shown by the arrow diagram 

Draw an arrow diagram for the set of ordered pairs. State the rule also.

$\left\{\right(-1, 1), (-2, 2), (-3, 3), (-4, 4\left)\right\}$

Draw an arrow diagram for the set of ordered pairs. State the rule also.

$\left\{\right(2, 4), (3, 5), (6, 8), (7, 9\left)\right\}$

Draw an arrow diagram for the set of ordered pairs. State the rule also.

$\left\{\right(1, 1), (8, 2), (27, 3), (64, 4\left)\right\}$

Draw an arrow diagram for the set of ordered pairs. State the rule also.

$\left\{\right(2, 1), (6, 3), (8, 4), (10, 5\left)\right\}$