# How do you find the slope of a horizontal line?

Space and AstronomyHorizontal lines have a slope of 0. Thus, in the slope-intercept equation **y = mx + b, m = 0**. The equation becomes y = b, where b is the y-coordinate of the y-intercept.

## What is the slope of a horizontal line?

When two points have the same y-value, it means they lie on a horizontal line. The slope of such a line is **0**, and you will also find this by using the slope formula.

## How do you find the slope of a vertical and horizontal line?

Video quote: *So we could take two different approaches we could actually graph this line or we could just use our slope formula. That says y2 minus y1 divided by x2 minus x1 is equal to our slope.*

## How do you find the slope of a straight horizontal line?

Horizontal lines have no vertical change — it continues straight left or right. In other words, the change in the y values between any points on the graph is 0, since there is no change. This means that **the slope of a horizontal line is 0 (m=0)**.

## What is the formula for a horizontal line?

y = b

A horizontal line is a line that is parallel to the x-axis of the coordinate plane and its equation is of the form **y = b**, where ‘b’ is constant, whereas, a vertical line is a line parallel to the y-axis and its equation is of the form x = b, where ‘b’ is constant.

## How do you find slope given an equation?

To find the slope of a line given the equation of the line, **first write it in slope-intercept form.** **Use inverse operations to solve for y so that it is written as y=mx+b**. Then you can easily see the slope since it is the coefficient of the x variable, or the number in front of x.

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