Question

is the graph of this equation a horizontal or vertical line?
y = -3
horizontal line vertical line

Explanation:

Step1: Recall line equation types

Horizontal lines have equations of the form \( y = k \) (constant \( y \)-value, \( x \) can vary). Vertical lines have \( x = k \) (constant \( x \)-value, \( y \) varies).

Step2: Analyze \( y = -3 \)

The equation \( y = -3 \) has a constant \( y \)-value (\(-3\)) and \( x \) can be any real number. This matches the form of a horizontal line.

Answer:

horizontal line