Spread Betting Game

I'm not a player. If I bet on a game 5 days before the match and the difference is 7, and the changes spread to 10 by game day, not 10 apply to my bet, or spread "locked" to 7 for my bet?

Your spread is dictated both the bet. If the line moves it does not affect your wager.
If you place a bet in Las Vegas spread will be printed on the ticket.

It is locked at the time of your investment bet. If you're going to bet with spreading point, make sure you understand how the other part is a "push" (when the gap is an exact match of the final result). Some places to bind to the house and some will attach to the bettor. For this reason, is why you see a lot of official lines with a 1 / 2 in the spread.

You get the point of spread betting.

7. Locked at the time of your bet.

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Once money changes hands the terms of the bet is locked.

The spread is locked when you place the bet.

a gap does sometimes change the whole week but it is locked in the line you bet on

you're stuck at the bet.