Accepted Answer
The proportional relationship that gives the cost of x pounds of rice is given as follows:y = 3x.What is a proportional relationship?A proportional relationship is a special case of a linear function, with slope represented by k and intercept of 0, hence the output variable y is obtained with the multiplication of the input variable x and the slope k, as follows:y = kx.In this problem, the input and the output are given as follows:Input: pounds of rice.Output: cost.You can buy 3 pounds of rice for 9 dollars use, hence the constant representing the cost per pound is given as follows:k = 9/3 = 3.Hence the equation is:y = 3x.Missing InformationThis problem is incomplete but we suppose that it asks for a proportional relationship giving the cost of x pounds of rice.More can be learned about proportional relationships at brainly.com/question/10424180#SPJ1