Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 5 - Linear Functions - 5-7 Scatter Plots and Trend Lines - Lesson Check - Page 340: 2



Work Step by Step

Two points on the trend line are: $(x_1,y_1) \rightarrow (25,76)$ $(x_2,y_2) \rightarrow (43,32)$ Write an equation of the trend line. $m=\frac{y_2-y_1}{x_2-x_1}=\frac{32-76}{43-25}=2.44$ Use the point-slope form: $y-y_1=m(x-x_1)$ Plug in values: $y-76=-2.44(x-25)$ $y=-2.44x+137$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.