
Related to vertical lines:
 Slope of a line
 yintercept of the line
 slope intercept equation of a line
 Pictures of Horizontal Lines
Vertical lines are lines that go straight up and down as you can see in the picture below:
Vertical Line Picture
Horizontal Line Picture
Other traits of Vertical lines
 The equation of a vertical line does NOT have a yintercept since a vertical line never crosses the yaxis.
 The slope of a vertical line is undefined because the denominator of the slope (the change in X) is zero
 Vertical lines help determine if a relation is a function in math.
 The equation of a vertical line always takes the form x = k
 where k is any number and k is also the xintercept. For instance in the graph below, the vertical line has the equation x = 2 As you can see in the picture below, the line goes straight up and down at x = 2
Example 1 of a Vertical Line
Equation : x = 1
General Formula for the equation of a Vertical Line
is x = K where k is the xintercept
Several Examples
Below are several examples of the equation and graph of different vertical lines
Example 1 of a Vertical Line
Equation : x = 1
Example 2 of a Vertical Line
Equation : x = 1