Question

What is the slope of the line from point (-4,2) to (-2,2)?

Answer 1

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (-4, 2) and (-2, 2). Substitute:

$m=\dfrac{2-2}{-2-(-4)}=\dfrac{0}{-2+4}=0$

Answer: The slope is equal 0   (it's a horizontal line y = 2).