Answer:
Dr Loss on impairment 8,700
Cr Debt investment 8,700
Step-by-step explanation:
Yayai didn't purchase Schuyler's bonds to trade them, they purchased them as a held-to-maturity investment, so they are reported in the Debt investments account which has a debit balance (asset account). Since it decreases in value, it should be debited.
The loss on impairment account reports decreases in the net carrying value of assets, such as debt investments.