Final answer:
The correct equation representing the proportional relationship between the number of Twix bars and their weight is W = 1.5N, where W is the total weight in ounces, and N is the number of Twix bars.
Step-by-step explanation:
The question asks to determine an equation that represents the proportional relationship between the number of Twix bars and their weight. Given that the line goes through the point (1, 1.5), we can deduce that each Twix bar weighs 1.5 ounces since one bar relates to 1.5 ounces in weight. Therefore, the equation that represents this relationship is W = 1.5N, where W is the total weight of the Twix bars in ounces, and N is the number of Twix bars.