Asked by pinkpolkadots7
Explain why the slope of a horizontal line is zero, and the slope of a vertical line is undefined.
The slope is the tangent of the enclosed angle. Tan = vertical side divided by horizontal side. With a horizontal line, the verticle side is zero and zero/any number is zero.
For the vertical line, the horizontal side is missing (zero) and any number divided by zero is undefined.
The slope is the tangent of the enclosed angle. Tan = vertical side divided by horizontal side. With a horizontal line, the verticle side is zero and zero/any number is zero.
For the vertical line, the horizontal side is missing (zero) and any number divided by zero is undefined.
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