Question

is the graph of this equation a horizontal or vertical line?
y = 80
horizontal line vertical line

Explanation:

Step1: Recall line equation forms

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

Step2: Analyze given equation

The equation is \( y = 80 \), which matches the horizontal line form \( y = k \) (here \( k = 80 \)).

Answer:

horizontal line