Final answer:
The statement 'if k = 3, then 3 = k' is an illustration of the Reflexive Property of equality, where anything is considered equal to itself.
Step-by-step explanation:
When it is stated that if k = 3, then 3 = k, the property being described is the Reflexive Property of equality. This property essentially states that anything is equal to itself. Hence, no matter how the equation is read, either as k equals 3 or as 3 equals k, it's simply affirming that the same value is on both sides of the equation, which is fundamental to the notion of equality.