## Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole

# Chapter 10 - Section 10.2 - Graphs of Linear Equations and Slope - Exercises - Page 450: 11c

-1

#### Work Step by Step

(1, -1) and (2, -2) x1=1, y1=-1,x2=2,y2=-2 Using slope formula m = $\frac{y2-y1}{x2-x1}$ m= $\frac{-2-(-1)}{2-1}$ =$\frac{-1}{1}$ =-1

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