. A bicycle store uses a young person's height as one factor to determine the wheel diameter of an appropriate bicycle. For heights of 44-48 inches , the store suggests 18 inch wheels. For heights of 47-53 inches, the store suggests 20 inch wheels. For heights of 52-57 inches , the store suggests 24 inch wheels. Is the relationship between a young person's height and the recommended wheel diameter a function? Explain your reasoning.