1. The problem asks to write the equation of a line in slope-intercept form given the slope and y-intercept. 2. The slope-intercept form of a line is given by the formula: $$y = mx + b$$ where $m$ is the slope and $b$ is the y-intercept. 3. Here, the slope $m = -4$ and the y-intercept $b = 8$. 4. Substitute these values into the formula: $$y = -4x + 8$$ 5. Therefore, the equation of the line is: $$y = -4x + 8$$