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 3 - Graphing Linear Functions - 3.5 - Graphing Linear Equations in Slope-Intercept Form - Exercises - Page 141: 12

Answer

The slope of the line is $-7$.

Work Step by Step

Take first two points from the table. $(x_1,y_1)=(-4,2)$ and $(x_2,y_2)=(-3,-5)$. Use slope formula. $m=\frac{y_2-y_1}{x_2-x_1}$ Substitute all the values. $m=\frac{-5-2}{-3-(-4)}$ Simplify. $m=\frac{-7}{-3+4}$ $m=-\frac{7}{1}$ $m=-7$ Hence, the slope of the line is $-7$.
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