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The slope of a horizontal line is zero. It has a slope, but slope = 0 and this makes it different from a vertical line which has a slope that is undefined because you cannot divide 0 over 0 which is how much a vertical line rises and runs.

Ways to find slope:

(y2-y1)/(x2-x1 )

or

rise/run

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Q: What is the slope of a horizontal line?
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Related questions

A horizontal line has an undefined slope?

No, the slope of a horizontal line is 0. The slope of a vertical line is undefined.


Slope of horizontal line?

The slope of a horizontal line is zero.


If the slope of a line is 0 is the line horizontal or vertical?

if the slope is 0, the line is horizontal.


Do horizontal lines have an undefined slope?

No. The slope of a horizontal line is zero. The slope of a vertical line is undefined.


The slope of a horizontal line is?

Horizontal lines have a slope of 0.


What is the equation of a line with a slope of zero?

A horizontal line has a slope of zero. The equation of a horizontal line is y = a.


What is the slope of horizontal line?

The slope of a horizontal line is zero. That's because the slope measures how steep the line is, and a flat line is not steep at all and therefore has no slope.


Why is a slope of a horizontal line zero?

The slope of a line is the tangent of the angle made by the line with the X-axis. Since for a horizontal line, this angle is 0 and tan(0) = zero, the slope of a horizontal line is zero.


Why is the slope of a horizontal line zero?

The slope of a line is the tangent of the angle made by the line with the X-axis. Since for a horizontal line, this angle is 0 and tan(0) = zero, the slope of a horizontal line is zero.


What is the slope of a line that is parallel to a horizontal line?

Well since the lines are parallel they would have the same slope. And the slope of any horizontal line is 0. The slope of a vertical line is undefined.


Slope of a vertical line?

The slope of a vertical line is undefined. Horizontal slope is 0.


When a graph make a horizontal line what is it?

What do you mean? As in if you connect two points that make a horizontal line? Are you trying to figure out the Slope? The slope of a horizontal line is 0. And the slope of a vertical line is undifined. If that's what you were asking. Or if you were asking plainly what it is when that happens, it's just a horizontal line.