Altcoin is backed up by Bitcoin?

It's bit confused here. I'm new when it comes to currency trading aka noob.

For example.

– 1 BTC = $100.00
– 1 NEO = 0.01 BTC
– 1 NEO = $1.00

If the demand for the NEO keep rising, the price would increase.
For example 1 NEO = $2.00.
That mean, 1 NEO = 0.02 BTC.

Suddenly, the price of BTC are increasing too. Example 1 BTC = $200.00, so that the price of NEO will increase too right? Meaning 1 NEO = 0.04 BTC / $4.00 right?

So…

1. What will happen if the NEO demand kept…

Altcoin is backed up by Bitcoin?