Is $(-1, 1), (-2, 2), (-3, 3), (-4, 4)$ a function? Justify your answer with reasons. State the domain and range. Represent this by the rule method. 

Write in words the mapping for the function. Illustrate by arrow diagram.

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

Write in words the mapping for the function. Illustrate by arrow diagram.

$\left\{\left(2, \frac{1}{2}\right), \left(3, \frac{1}{3}\right), \left(4, \frac{1}{4}\right), \left(5, \frac{1}{5}\right)\right\}$

Write in words the mapping for the function. Illustrate by arrow diagram.

$\left\{\left(1,-1\right), \left(0, 0\right), \left(9, 3\right), \left(4, 2\right)\right\}$

Write in words the mapping for the function. Illustrate by arrow diagram.

$\left\{\left(10, 9\right), \left(9, 8\right), \left(8, 7\right), \left(7, 6\right)\right\}$

Write in words the mapping of the function represented by arrow diagram. Mention the domain and range.

Write in words the mapping of the function represented by arrow diagram.Mention the domain and range.