Aset of ordered pairs in which there is only one y-value for each x-value is called a

C) function

Step-by-step explanation:

like the other guy said its the definition of a function.

You need to look at this chart The system of equations below represents the number of people and total sales for the county fair on Tuesday, where x represents the number of child tickets and y represents the number of adult tickets. you need to take the amount of money you get for adult tickets only then divid it by seven and that is you answer