1 is a function. This is because there are no repeating inputs (x values). 2 is not a function. The number 3 repeats in the x column. This means there is a repeating input value with different y values. For example let’s say sprite is 3. You can’t put in 3 for spite and get two different answers like sprite and Fanta. For this reason it’s not a function. 3,2 can be changed to not be equal to 3,0 for the last question