Determine whether the slope of (6, -8) and (-6, -8) is positive, negative, zero, or undefined.
The slope of a line is determined by the formula:
m = (y₂ - y₁)/(x₂ - x₁)
Using the coordinates given, we have:
m = (-8 - (-8))/(-6 - 6)
m = 0/(-12)
m = 0
The slope is 0. Therefore, the slope of the line between the points (6, -8) and (-6, -8) is zero.