Since most of the alt coins are traded with BTC or ETH. SO I think altcoins prie are dependent on the price of this two.
What is your opinion please share.
The price of the coins depend on the demand of the coins. If there are many people doing transaction (buying and selling) or trading that particular coin, then it may increase the price. There are instances that BTC ecreases but a particular coin increases because of the demand and transaction of the people.