Demand and Supply Curve Shifts

If the price of vegemite increases, then the demand of butter would:

If wheat farms stop supplying to bakers delight will the supply of bread decreases?

If disposable income rises, would the:

When demand decreases, supply increases..

If prices in the canteen continue to rise how will this effect the demand curve

If the price for invisalign decreases will the demand of braces decrease

Why would demand of margarine increase?

If a drought occurred on a dairy farm, what would happen to the market for margarine?

When supply increases, demand decreases