Answer: B: symmetric property
Reflexive property states that for every real number x, x = x.
symmetric property states that for all real numbers x and y, if x = y then y = x.
associative property states that you can add or multiply regardless of how the numbers are grouped. =(like adding/multiplying like terms.
Transitive property states that for all real numbers x,y, and z, if x = y and y = z then x = z.
