Question

is the graph of this equation a horizontal or vertical line?
x = 0
horizontal line vertical line

Explanation:

Step1: Recall line equation types

Horizontal lines have equations of the form \( y = k \) (constant \( y \)-value), vertical lines have equations of the form \( x = k \) (constant \( x \)-value).

Step2: Analyze \( x = 0 \)

The equation \( x = 0 \) is in the form \( x = k \) (where \( k = 0 \)), so it represents a vertical line (since \( x \)-value is constant, \( y \) can be any real number).

Answer:

vertical line