[Note: The distance between cities in California (US) distance chart below is straight line distance (may be called as flying or air distance) between the two locations in California (US) calculated based on their latitudes and longitudes. This distance may be very much different from the actual travel distance.]
In drawing the demand schedule or the demand curve for a good we take income of the people as given and constant. When as a result of the rise in the income of the people, the demand increases, the whole of the demand curve shifts upward and vice versa. The greater income means the greater purchasing power.
Supply. If you're selling a manufactured item, any disruption in the process affects revenue. Whether it's a shortage of raw material or broken equipment, the company's bottom line suffers. The same situation is true for delivery problems.hen times are hard, people try to save money to spend on essentials. If your product doesn't fall into that category, sales slow and revenue drops. When the economy is bad, banks choose to retain potential loan money in case conditions worsen.