Final answer:
To determine if the relationship between the amount of peanut butter (x) and the number of cracker packages (y) is proportional, we need more information and data points to calculate the correlation coefficient.
Step-by-step explanation:
To determine if the relationship between the amount of peanut butter (x) and the number of cracker packages (y) is proportional, we need to check if it follows the rules for direct proportionality. In direct proportion, a change in one variable leads to the same change in the other variable. If the relationship between x and y can be represented as y = kx, where k is the proportionality constant, then it is proportional.
If we have more information, such as data points with measurements of x and y, we can calculate the correlation coefficient and check if it is significantly different from zero. This would provide additional evidence for or against proportionality.
However, without any specific data or information about the relationship between x and y, we cannot definitively determine if it is proportional. Therefore, the answer is c) I need more information to determine if it's proportional.