A scatter diagram includes the following data points:
Two regression models are proposed: (1) 
, and (2) 
.Using the least squares method, which of these regression models provides the better fit to the data? Why?
Definitions:
Income Effect
The fluctuation in income for either an individual or the economy and its influence on the demand levels for certain goods or services.
Substitution Effect
The economic principle that as prices rise, consumers will replace more expensive items with less costly alternatives.
Marginal Utility
The extra contentment a customer obtains by using an additional unit of a product or service.
Total Utility
The aggregate level of satisfaction or benefit that a consumer derives from consuming a particular quantity of goods or services.
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