Here's why:

* Double Displacement: In this type of reaction, the positive and negative ions of two reactants switch places. In this case, the potassium (K+) from KI combines with the nitrate (NO3-) from AgNO3 to form KNO3, while the silver (Ag+) from AgNO3 combines with the iodide (I-) from KI to form AgI.

* Metathesis: This is another term for a double displacement reaction.

Additionally, this reaction is also a precipitation reaction because one of the products, AgI, is a solid precipitate that forms out of solution.

Here's a breakdown of the reaction:

* Reactants:

* Potassium iodide (KI) - aqueous (dissolved in water)

* Silver nitrate (AgNO3) - aqueous (dissolved in water)

* Products:

* Silver iodide (AgI) - solid (precipitate)

* Potassium nitrate (KNO3) - aqueous (dissolved in water)

Overall Reaction:

KI(aq) + AgNO3(aq) → AgI(s) + KNO3(aq)