A perfectly price-inelastic demand curve is vertical (Parallel to Y-axix) because the percentage change in quantity demanded is nil whatever the percentage change happens in price.
Demand curves almost always have negative slopes. The Y value being price and the X value being quantity. The higher the price, the more negative the slope. There are very rare conditions where a demand curve could have a positive slope, but its not normally used in business classes.
Because demand creates the price, and not the price dictates the demand.
There is not a formal abbreviation for the word demand. However, there are abbreviations for services such as video on demand (VOD) that you get from your television provider.
demand
Prices falling can cause abnormal demand curve. Any kind of changes to the price, production, etc. can also cause abnormal curves in demand.
The MArket Demand Curve
blunt blow
As price (on the horizontal) increases, demand (on the vertical) will decrease.
Gdbugufifudusks
market demand
graph
The demand curve means a graphcurve that normally slopes downward towards the right of thechart(except for aGiffen good, where it slopes toward the left), showingquantityof aproduct(good orservice) demanded at differentpricelevels. Customarily, the price is plotted on vertical ('Y') axis and quantity on the horizontal ('X') axis, and it is assumed that (in theshort run)incomelevels, price ofsubstitutes, andcustomerpreferences, remain unchanged. Demand curves of theindividualproductsare aggregated to give amarket demand curveand, when drawn together with thesupply curves, show theequilibrium priceat the intersection of the two curves. See link below.
Graph
When the demand curve is horizontal to the x axis, it is said to be elastic and therefore more responsive to changes in price. When the demand curve is vertical, it is more inelastic and consumers will be more apt to purchase a good regardless of the price.
The demand / supply graph is designed to have supply on the vertical axis (Y) and demand on the horizontal (X). Thus you will have a higher supply = lower demand, or lower supply = high demand.
The demand curve is drawn with price on the vertical axis and quantity demanded on the horizontal axis. Mathematically, the slope of a curve is represented by rise over run, or the change in the variable on the vertical axis divided by the change in the variable on the horizontal axis. Therefore, the slope of the demand curve represents change in price divided by change in quantity. Elasticity, on the other hand, aims to quantify the responsiveness of demand and supply to changes in price, income, or other determinants of demand.