Question

write the equation of the line.

Explanation:

Step1: Identify line type (horizontal)

The line is horizontal, so its slope \( m = 0 \).

Step2: Determine y - intercept

A horizontal line has the equation \( y = b \), where \( b \) is the y - intercept. From the graph, the line crosses the y - axis at \( y=-20 \).

Step3: Write the equation

Using the slope - intercept form \( y = mx + b \), with \( m = 0 \) and \( b=-20 \), we get \( y=0x - 20\), which simplifies to \( y=-20 \).

Answer:

\( y = - 20 \)