The slope of y = -1 is 0. This is because the equation is a horizontal line with a constant y-value of -1, meaning it does not change in the y-direction.
It has no slope and it is a horizontal line parallel to the x axis on the Cartesian plane.
Slope = 0
4
Slope = -1
The slope is zero.
Assuming y = -2x + 1; -2 is the slope.
7
y=1
1
The slope is 1.
Slope = -1
3
-4