An article on the cost of housing in california that appeared in the san luis obispo tribune† included the following statement: "in northern california, people from the san francisco bay area pushed into the central valley, benefiting from home prices that dropped on average $4000 for every mile traveled east of the bay area." if this statement is correct, what is the slope of the least-squares regression line, ŷ = a + bx, where y = house price (in dollars) and x = distance east of the bay (in miles)?

maybe - definition of supplementary angles. im not sure. sorry

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529 and 531

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not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

make sure you have version 2.50

try looking in the very back of the book : )

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