TRY IT? Which relation is NOT a function? Explain your answer.
(1) {(1,2), (3,4),(4,5), (5,6)}
(2) {(3,1), (2,1),(1,2), (3,2)}
(3) {(4,1),(5,1),(6,1),(7,1))
(4) {(0,0), (1,1), (2,2), (3,3)}

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Which of the following best describes the graph below? + + 2 + 3 + 4 1 o a. it is not a function. o b. it is a one-to-one function. o c. it is a many-to-one function. o d. it is a function, but it is not one-to-one.