The answer is 0.
Step-by-step explanation:
The slope of a line that is parallel to the x-axis, will always be 0, and the slope of a line that is perpendicular to the x-axis, will be undefined. The slope of a line that is parallel to the y-axis, will be undefined, and the slope of a line that is perpendicular to the y-axis, will be 0. Basically, the answer is 0.
Try to remember this, it will help you a lot:
Slope of parallel line(x - axis) = 0
Slope of parallel line(y - axis) = undefined
Slope of perpendicular line(x - axis) = undefined
Slope of perpendicular line(y - axis) = 0
Hope this helps you!! :)
(Please mark my answer the brainliest!)
