What of the following statements describes a zero slope?

a zero slope is just a straight line either on the y axis or x axis but its just basically a slope of a horizontal line the never changes

example:

y-axis (1,2,3,4,5,6,7,8,9)

x-axis (2,2,2,2,2,2,2,2,2)

or

x-axis (1,2,3,4,5,6,7,8,9)

y-axis (2,2,2,2,2,2,2,2,2)

A zero slope is just the slope of a horizontal line