The slope (m) of the line graphed is -4/2, because the line goes down 4 (-4) and over 2 (+2), which is change in y over change in x m = -4/2 = -2 the y-intercept (b) of the line = -1, because the line crosses the vertical line at x=0 at y=-1 now for the equation: y = mx + b y = -2x + -1 = -2x - 1 f(x) = -2x-1 the last answer is correct
