Answer:
No, not a function
Step-by-step explanation:
Functions cannot have two or more same domain and different range. (3,3) and (3,9) have same domain and different range.
0,-2 or 0,8. As long as the x variable does not repeat in a relation, it is a function.
Answer:

Step-by-step explanation:
√120 is irrational.
Step-by-step explanation:

Apply Quoteint of Powers. Divide the intergers. serpately.
Note that Quotient of Powers is

So the answer is

The answer is

or

Answer:
Square and rectangle
The other polygon isn't necessarily have right angle