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Good question. They have infinite slopes.

Incidentally, vertical lines are not functions in the formal sense. One x value is mapped on to an infinite number of y values. A function requires that each x maps on to only one y value.

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15y ago
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9y ago

The slope of a vertical line is undefined. This is because the slope is the rise divided by the run and a vertical line has a run of 0. Since we cannot divide by zero, the slope is undefined.

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

What slope does vertical line have?

A vertical line has a slope of infinity.


Slope of a vertical line?

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


What is the difference between a line with a slope of zero and no slope?

A line with slope of zero is horizontal. A line with no slope is vertical because slope is undefined on a vertical line.


What is the slope of a line parallel to a vertical line?

A vertical line has an undefined slope. For the line to be parallel to a vertical line, the slopes would have to be the same. Therefore, the line parallel to a vertical line also has an undefined slope.


What kind of slope does a vertical line have?

a vertical line has an undefined slope, while a horizontal slope has a slope of zero.


What describes the slope of a vertical line?

The slope of a line becomes extremely large in magnitude as the line approaches being vertical;and is undefined or infinite for a truly vertical line.


Which has a greater slope a horizontal or vertical line?

Vertical. Te horizontal like has zero slope ( no slope) and the vertical line has infinite (very very high) slope


Why can you use the point-slope formula when writing an equation of a horizontal line but not with a vertical line?

A vertical line HAS NO slope! The slope is undefined in this case.


Is an undefined slope a vertical or horizontal line?

An undefined slope is vertical.


What is the slope of all vertical lines?

The slope of a vertical line is not defined.


A vertical line has a run which is?

run as in slope of a line is zero . horizontal lines have no slope and vertical lines have a slope of zero


When the slope of a line is indefinite?

The slope of a line is undefined if the line is vertical.