Answer:
An increase of 1 million in revenue for every 4 units sold.
Explanation:
In the context you provided, a slope of 1/4 means that for every 1 unit increase in the number of items sold, there is an increase of 1/4 million (or 250,000) in revenue. It represents a linear relationship between the number of units sold and the revenue generated. So, if you sell 4 units, you would expect the revenue to increase by 1 million, and if you sell 8 units, the revenue would increase by 2 million, and so on.