## Algebra 2 (1st Edition)

Published by McDougal Littell

# Chapter 3 Linear Systems and Matrices - 3.4 Solve Systems of Linear Equations in Three Variables - 3.4 Exercises - Mixed Review - Page 185: 56

Undefined

#### Work Step by Step

The equation for the slope of a line is: $$m=\frac{y_2-y_1}{x_2-x_1}=\frac{10-2}{-5-(-5)}=\frac{8}{0}$$ The denominator is 0, so the slope is undefined.

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