Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 5 - Linear Functions - 5-7 Scatter Plots and Trend Lines - Practice and Problem-Solving Exercises - Page 340: 22


a) Please see the graph. b) 344.142 feet c) All of the speeds in the table are between 10 and 45 miles per hour. 90 miles an hour is an outlier, so there would be a much larger gap. d) The slope would increase with adding the new point to the graph. The intercept would decrease with adding the new point.

Work Step by Step

a) Please see the graph created in Microsoft Excel. b) $m= (164-44)/(40-15)$ $m = 120/25$ $m= 4.8$ $y=mx+b$ $44 = 15*4.8+b$ $44 = 72 + b$ $44-72 = 72+b-72$ $-28 = b$ $y=4.8x-28$
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