Video

Slope of a horizontal line (Full video)

Khan Academy

Supporting grades: 8

Description: Sal finds the slope of a line between two points (which turns out to be a horizontal line). Find the slope of the line that goes through the ordered pairs 7, negative 1 and negative 3, negative 1. Let me just do a quick graph of these just so we can visualize what they look like. So the line that connects these two points will look like this.

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