Final answer:
The equation for a line with a slope of 3.5 and a y-intercept of (0, -4) is y = 3.5x - 4.
Step-by-step explanation:
The equation to describe a line with a slope of 3.5 and a y-intercept of (0, -4) is derived from the slope-intercept form of a linear equation, which is y = mx + b, where m is the slope and b is the y-intercept.
To apply the given conditions to this form, simply plug in the given slope and y-intercept values. The slope (m) is 3.5 and the y-intercept (b) is -4, resulting in the equation y = 3.5x - 4.