Question

Identify the property that justifies each step asked about in the answer area below.Line 1:(xz)yLine 2:x(zy)Line 3:x(yz)Line 1 to Line 2:Line 2 to Line 3:

Answer 1

Line 1 to line 2) This property,

$(xz)y=x(zy)$

is called associativity.

Line 2 to line 3) The property used here is this:

$xy=yx$

It is called commutativity.