Yes because you are multiplying 3 z’s and also 3z’s
This argument is no valid although the first part of the statement is valid. If a number is larger than 6 than its square must be larger than 36. But if the number is smaller than 6, its square does not need to be smaller than 36. For example...
(-100)²=10000
-100 is smaller than 6 but its square is bigger.
answer: False
2 is Reflexive property
4 is (I don't remember the specific property of this)