Truck Speed vs Gas Mileage An economist wanted to analyze the relationship between the speed of a car ( x )and its gas mileage ( y ). As an experiment a car is operated at several different speeds and for each speed the gas mileage is measured. These data are shown below. 
{Truck Speed vs Gas Mileage Narrative} Determine the least squares regression line.
Definitions:
Water Shortages
Situations where the available water supply is insufficient to meet the demands of water usage.
Supply
The total amount of a product or service available for purchase at any given time.
Flat Tract
A large piece of land with minimal to no slope, often used in agriculture or construction due to its ease of modification.
River
A large natural stream of water flowing in a channel to the sea, a lake, or another river, often a central feature in ecosystems and human civilizations.
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