Bitcoins price is greatly decreasing right now would it affect the price of other coins if this continuous?
Yes, when bitcoin falls, other coins are falling in price with it. Market wont move up until btc got cheap enough for the big boys to load up their stack. I'm sure that by the end of this year the cost of bitcoin will pleasantly surprise us all. The moon will be!
Indeed altcoin will follow bitcoin prices, when bitcoin falls then auto altcoin will fall. but not all fall, there are some who can keep the price.
bitcoin is now falling in price, because it is in the correction phase. after this period passes and no bad news overflows it, then bitcoin will rise to the moon.
Bitcoin up altcoins fall (in btc value), Bitcoin down altcoins fall (in btc value + usd value)