Question

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

Explanation:

Step1: Recall line equation types

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

Step2: Analyze \( y = 0 \)

The equation \( y = 0 \) has a constant \( y \)-value (0) for all \( x \)-values, matching the horizontal line form.

Answer:

horizontal line