what is
vertical line
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a line which is vertical
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4
Answer:
A line on the coordinate plane where all points on the line have the same x-coordinatevertical line is one the goes straight up and down, parallel to the y-axis of the coordinate plane. All points on the line will have the same x-coordinate. In the figure above, drag either point and note that the line is vertical when they both have the same x-coordinate.
A vertical line has no slope. Or put another way, for a vertical line the slope is undefined. As you drag the points above, notice that the slope indicator goes away when the line is exactly vertical.
The equation of a vertical line is
x = a
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