Question

find the equation for some horizontal lines. now, try this one. whats the equation of this line?

Explanation:

Step1: Identify horizontal line property

A horizontal line has the equation form $y = k$, where $k$ is the constant y-value for all points on the line.

Step2: Locate the line's y-value

The line crosses the y-axis at $y = -10$, and all points on the line have this y-coordinate.

Answer:

$y = -10$