# How do you graph the line  x = 4?

May 3, 2016

$x =$ a number is always a vertical line, passing through the $x$-axis at that value of $x$

#### Explanation:

You could draw the graph by plotting points first. In this case, $x$ is always 4, regardless of the $y$-value.

Possible points could be (4;-5), (4;-2), (4;0), (4;7) etc.

Plotting the points will give you a vertical line passing through the $x$-axis at 4.

Vertical lines only have an $x$-intercept. Note that the $y$-axis is also a vertical line, crossing the $x$-axis at 0. The equation of the $y$-axis is $x = 0$