Question

What is the slope of a horizontal line? 0 undefined 1 -1

Answer 1

the slope of a horizontal line is zero

Answer 2

Answer:

Zero

Step-by-step explanation:

When a line is horizontal or you can say parallel to the x-axis, its slope is zero.

The reason being that there is no change in the value of y because the value of x is constant at each point of the line.

Slope = (change in y) / (change in x)

On the contrary, the slope of the line which is vertical or parallel to the y-axis has an undefined slope.