# Chapter 3 Linear Systems and Matrices - Cumulative Review Chapters 1-3 - Page 232: 19

Horizontal

#### Work Step by Step

The equation for the slope of a line is: $$m=\frac{y_2-y_1}{x_2-x_1}=\frac{3-3}{=\frac{2}{3}-(-\frac{5}{4})}=0$$ The slope is zero, so the line is horizontal.

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