What is the slope in the equation y=3 -x *
y=3-x is a line, so the slope is going to be the same everywhere on that line we can pick two points on the line x1 = 0, y1 = 3 x2 = 1, y2 = 2 (you could pick any two points) slope = (y2 - y1) / (x2 - x1) = (2 - 3) / (1 - 0) = -1 slope = -1