Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 11 - Data Analysis and Displays - Cumulative Assessment - Page 628: 4

Answer

$y=-3x-2$

Work Step by Step

The required linear equation in slope-intercept form goes through these two points $(-2,4)$ and $(1,-5)$. Find the slope: $$m=\frac{-5-4}{1-(-2)}=\frac{-9}{3}=-3$$ Use the slope and one of the points into point-slope form: $$y-(-5)=-3(x-1)$$ $$y+5=-3x+3$$ $$y=-3x-2$$
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