Fran has 3 tables that are in the shape of rhombuses. She wants to know how many people she can seat if she puts the tables together side by side in a row. Each person needs a space of 2 feet. How many people can be seated

C) would be a function. One way to test if something is a function or not is to do a vertical line test. A vertical line test is where you draw imaginary vertical lines and if it hits the “function” in one particular spot more than once, it is not a function. I suggest you look more into it to help you in the future. I hope this helped :)