Final answer:
The slope of the line represented by the equation 'y = 4 - 16x' is -16, which is the coefficient of x in the slope-intercept form.
Step-by-step explanation:
The slope of the line described by the equation y = 4 - 16x is -16. In the slope-intercept form of a linear equation, y = mx + b, m represents the slope of the line. In the given equation, the number in front of the x variable is -16, which is the slope. Therefore, the correct answer is (b) -16.