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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.

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

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Undefined

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.

the slope is infinite because you have a vertical line. To find a parallel line, the formula would be "x= any number" because that would also give you a vertical line.

x = -3 produces a vertical straight line parallel to the y axis with an x intercept at -3. A vertical line has an infinite (undefined) slope.

It is normally a parallel line parallel to the x or y axes on the Cartesian plane.

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The slope of a vertical line would be parallel to the y axis.

Undefined

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.

Infinite.

the slope is infinite because you have a vertical line. To find a parallel line, the formula would be "x= any number" because that would also give you a vertical line.

x = -3 produces a vertical straight line parallel to the y axis with an x intercept at -3. A vertical line has an infinite (undefined) slope.

It is normally a parallel line parallel to the x or y axes on the Cartesian plane.

An horizontal line . A line parallel with the x-axis. NB A vertical line / a slope parallel with the y-axis is described as 'undefined'.

Points: (6, 4) and (6, 8)Slope: 0 because it is a vertical straight line that is parallel to the y axis

A vertical line has a slope of infinity.

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

For two lines to be parallel they must have the same slope. A line parallel to a line with slope -2 would have a slope of -2.