What is the difference between a direct quotation of an exchange rate and an indirect$$ quotation?

$$

Indirect

Direct

quotations express exchange rates as units of foreign currency per unit of domestic$$ currency, whereas

$$

direct

indirect

quotations are exchange rates as units of domestic currency per unit of foreign currency.

Part $2$

If the exchange rate between the yen and the dollar changes from yen$85=$ $$1$ to yen$86=$ $$1,$ the yen has

$$

depreciated

appreciated

against the$$ dollar, and the dollar has

$$

appreciated

depreciated

against the yen.