answersLogoWhite

0


Best Answer

The slope of a line is defined as the rate of change on the vertical, or y axis, divided by the rate of change on the horizontal, or x axis.

This is more commonly expressed as:

Δy/Δx

For example, a diagonal line that lies at a 45° angle relative to the horizontal axis will have a slope of 1/1 = 1.

In the case of a horizontal line, it's rate of change on the y axis will be zero, this means that it's slope will be 0/Δx. Zero divided by anything equals zero, so that ends up being the slope of the line.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why does a horizontal line have a slope of 0?
Write your answer...
Submit
Still have questions?
magnify glass
imp