1 Glycerin, an ingredient in some toothpastes, can interfere with strengthening your teeth. 2  Glycerin layers your tooth in a sticky film that keeps the minerals in your saliva from interacting with your enamel to strengthen it.. Chew sugar-free gum. The gum promotes saliva production, without the sugar that makes weakened enamel worse. Gum with the natural sweetener xylitol doesn't feed the bacteria that weakens your enamel, and xylitol has actually been shown to strengthen tooth enamel.
Demand functions for a straight-line demand curve take the following form: Quantity = a - (b x Price). where a and b are constants that must be determined for each particular demand curve. When price changes, the result is a change in quantity demanded as one moves along the demand curve.
This is, in essence, what goes on behind a demand curve. Above you see an example of a demand schedule. It shows us how many units (quantity) of a good will be demanded at a given price. The above schedule gives us a linear demand curve, because for every $10 the price goes up, quantity goes down by 20. We can use this schedule to plot the following points on a graph. Since we know that the curve is linear, we can just connect these points to get our demand curve (we could also connect the points if it wasnât linear, it just wouldnât be as exact).