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## Algebra basics (ASL)

### Course: Algebra basics (ASL) > Unit 4

Lesson 5: Horizontal & vertical lines (ASL)# Slope of a horizontal line

When two points have the same y-value, it means they lie on a horizontal line. The slope of such a line is 0, and you will also find this by using the slope formula. Created by Sal Khan and Monterey Institute for Technology and Education.

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