Question

How do you graph the line `x = 4`?

Answer 1

`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`