The problem asks for an example of an equation of a line with zero slope. A line with zero slope is a horizontal line.

1. Problem Description

The problem asks for an example of an equation of a line with zero slope. A line with zero slope is a horizontal line.

2. Solution Steps

A horizontal line has the equation $y = c$, where $c$ is a constant. This is because the y-coordinate is the same for every x-coordinate. The slope of such a line is 0, since the change in y is always 0, so the slope is $\frac{\Delta y}{\Delta x} = \frac{0}{\Delta x} = 0$.

An example of an equation of a line with zero slope is $y = 5$.

3. Final Answer

$y = 5$