When selecting JackpotCity online slots to wager on, a player has to make some important decisions before he can start spinning the reels. These are known as betting options.

They include the number of paylines, the number of coins per payline and the coin size. Most slots allow you to choose all three betting options. Some slot games will a fixed number of coins wagered per payline, usually one, thus eliminating this choice from the betting options. Some (but not many) slots that fix both the coin size and the number of coins, effectively freezing the line bet.
There are two terms that should be clearly defined at this point. The line bet is how much is wagered per payline and can be determined as the product of the coin size and the number of coins per payline. The total amount wagered per spin is know as the total bet, and it is the product of the line bet and the number of paylines selected.
Since it makes little sense to play the online slot game without enabling all the paylines, this will generally be something you are allowed to choose. You can only win from a payline that is enabled. Selecting all paylines is most important with progressive jackpot games, as you can only win the jackpot when the stated combination occurs in the highest payline. Selecting all paylines will increase the total bet per spin drastically, especially in a slot game that has 50 or 100 paylines. In such a game the player enable all paylines and reduce his line bet in order to reduce the total bet.