Co-Authored By:

##### Asked by: Svitlana Tschierschke

science space and astronomy# What is the slope of a straight horizontal line?

Last Updated: 2nd April, 2020

**slope**of a

**horizontal line**is 0!

Click to see full answer.

Hereof, what is the slope of a horizontal line called?

In their case, no matter which two points we choose, they will always have the same x-coordinate, That means that the run, the **horizontal** difference between two points, will always be zero.

Also, is a horizontal slope undefined? The **slope** of a line can be positive, negative, zero, or **undefined**. A **horizontal** line has **slope** zero since it does not rise vertically (i.e. y_{1} − y_{2} = 0), while a vertical line has **undefined slope** since it does not run horizontally (i.e. x_{1} − x_{2} = 0).

Additionally, why is the slope of a horizontal line zero?

Mathwords: **Zero Slope**. The **slope of a horizontal line**. A **horizontal line** has **slope** 0 because all its points have the same y-coordinate. As a result, the formula used for **slope** evaluates to 0.

Which is horizontal line?

A **horizontal line** is one which runs left-to-right across the page. It comes from the word 'horizon', in the sense that **horizontal lines** are parallel to the horizon. The horizon is **horizontal**. Its cousin is the vertical **line** which runs up and down the page. A vertical **line** is perpendicular to a **horizontal line**.