Question

select the correct answer. which equation represents the vertical line passing through (1,-9)? a. x = -9 b. x = 1 c. y = -9 d. y = 1

Explanation:

Step1: Recall vertical - line equation

The equation of a vertical line is of the form $x = a$, where $a$ is the x - coordinate of any point on the line.

Step2: Identify x - coordinate

The given point is $(1,-9)$. The x - coordinate of this point is $1$. So the equation of the vertical line passing through $(1,-9)$ is $x = 1$.

Answer:

B. $x = 1$