Mathematics B Exam Worksheet - Regents High School Examination, The University Of The State Of New York, 2005 Page 14

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30 A real estate agent plans to compare the price of a cottage, y, in a town
on the seashore to the number of blocks, x, the cottage is from the
beach. The accompanying table shows a random sample of sales and
location data.
Write a linear regression equation that relates the price of a cottage to
its distance from the beach.
Use the equation to predict the price of a cottage, to the nearest
dollar, located three blocks from the beach.
Number of Blocks
Price of a Cottage
from the Beach
(y)
(x)
5
$132,000
0
$310,000
4
$204,000
2
$238,000
1
$275,000
7
$60,800
[14]
Math. B – Jan. ’05

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