math 5

Here are some real-life examples for you.  Can you determine whether or not each one is a function? Explain your reasoning.

• the relationship between the amount of a water bill and the amount of water used
• the relationship between the average score on a standardized test and an individual student's score
• the relationship between the color of a person's eyes and the color of that person's parents' eyes
• the relationship between a person's height and that person's weight