Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 1 - Linear Functions and Change - 1.6 Fitting Linear Functions to Data - Exercises and Problems for Section 1.6 - Exercises and Problems - Page 50: 3


This value of $r$ is unreasonable.

Work Step by Step

$r=0.9$ signifies that the data is very linear, since $0.9$ is close to $1$, and it is upward sloping. This plot doesn't look linear at all, so $r=0.9$ isn't a good estimate.
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