The relationship between the prices of apple and demand is : A Negative correlation
A negative correlation occurs when an increase in one variable leads to a decrease in value of the other variable.
As the price of goods and service go up in the open market, the demand for the goods and services goes down, this kind of relationship is known as an Negative correlation.
For Kelvin to have an increase in demand he must decrease the price of the apples.
Hence we can conclude that The relationship between the prices of apple and demand is a Negative correlation
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