Bitcoin is presently the most vital challenge amongst all other tasks, so that for the time being most of the altcoins available on the market clearly begin to depend upon bitcoin, so now nearly all altcoins rely on bitcoin, so some external elements, crypto currencies, in standard, move concurrently.
Yes actually most of the crypto in the market has ETH trading pair which is a direct altcoin for bitcoin. So if bitcoin market price moves so does the ETH and when ETH moves its market price so does the crypto that are using ETH platform. But the market price movements will not depend on bitcoin and ETH only because it will depend on the coin utilizations and the project implementation and its ROI.