Question

What is the slope of a line parallel to the x-axis?

Answer 1

The `x`-axis is a horizontal line with the equation `y=0`.

There are an infinite number of lines that are parallel to the `x`-axis, `y=0.`

Examples: `y=4`, `y=-2`, `y=9.5`

All horizontal lines have slope of 0.

If lines are parallel then they have the same slope.

The slope of a line parallel to the `x`-axis is 0.