In a graph, a line parallel to the Y-axis is called Vertical Line. It is a straight line which goes from top to bottom. Similarly, the line which goes from left to right and parallel lines to x-axis is called a horizontal line.
Let us learn more about Vertical Lines.
- The equation of a vertical line in graph i.e., parallel to y-axis is x = 0.
- The slope of a vertical line is infinity or undefined as it has no y-intercept and the denominator in the slope formula is zero.
- To check whether the relation is a function in maths, we use vertical line. It would be a function if all vertical lines intersect it minimum once. This is also called a Vertical line test. A graph will be considered as a function if it has only one output y for each input x.
Question: Plot the graph for the following:
- X = 8
- X = – 4
- X = 3
- X = – 5
- X = 6
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