minimal entity page
vertical line
[vertical line|vertical line] A vertical line is a straight line that runs perpendicular to a horizontal line, extending infinitely in both directions.
Definition
vertical line A vertical line is a straight line that runs perpendicular to a horizontal line, extending infinitely in both directions. It is represented by the equation x = a, where 'a' is a constant.
Mechanism
vertical line The vertical line test determines if a graph represents a function by checking if any vertical line intersects the graph at most once. This method functions since the intersection limit ensures the graph meets the criteria for a function.
Examples
vertical line A vertical line, such as the one in [link], has an x-intercept but no y-intercept unless it's the line x = 0.