Zero vs. Undefined: Calculating Slope for Horizontal and Vertical Lines

Miacademy & MiaPrep Learning Channel

This educational video provides a clear and methodical explanation of how to determine the slope of horizontal and vertical lines on a coordinate plane. The instructor, Justin, guides viewers through the process of plotting points, using the rise-over-run method, and applying the slope formula to mathematically prove why horizontal lines have a slope of zero while vertical lines have an undefined slope. The video specifically addresses the mathematical impossibility of dividing by zero in the context of vertical lines.