Question

in the accompanying diagram, which is an equation of line ( ell )?
options:
( x = 3 )
( x - y = 3 )
( x + y = 3 )
( y = 3 )

Explanation:

Step1: Identify line type

The line $\ell$ is vertical.

Step2: Recall vertical line equation

Vertical lines have form $x = a$, where $a$ is the x-intercept.

Step3: Find x-intercept of $\ell$

The line crosses x-axis at $x=3$.

Step4: Write the line equation

Substitute $a=3$: $x = 3$

Answer:

A. $x = 3$