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The image shows a graph with a horizontal line passing through the y-axis at \( y = -2 \). The task is to write the equation of this line.

### Solution:
The line is horizontal and crosses the y-axis at \( y = -2 \). The equation of a horizontal line is of the form:

\[
y = \text{constant}
\]

Here, the constant is \(-2\). Therefore, the equation of the line is:

\[
y = -2
\]

Would you like more details, or do you have any questions?

### Related Questions:
1. What is the equation of a vertical line that passes through \( x = 3 \)?
2. How do you determine the equation of a line given its slope and a point on the line?
3. What is the equation of the line passing through points \((0, 0)\) and \((2, 2)\)?
4. How can you determine if two lines are parallel based on their equations?
5. How do you find the equation of a line perpendicular to \( y = 2x + 3 \) that passes through the origin?

### Tip:
For horizontal lines, the equation will always be in the form \( y = \text{constant} \), while for vertical lines, it will be \( x = \text{constant} \).

Learn how to write the equation of a horizontal line that passes through the y-axis at y = -2. This problem covers fundamental concepts of equations of lines and is suitable for students in Grades 7-9.

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