Question

What is the slope of the line y=12?

Answer 1

slope = 0

Explanation:

The line y = 12, is a horizontal line parallel to the x-axis and passing through all points on the plane with a y - coordinate of 12.

Since it is parallel to the x-axis it's slope is zero.
graph{(y-0.001x-12)=0 [-40, 40, -20, 20]}