Unit: Functions Progress The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on you. Which of the relations given by the following sets of ordered pairs is a function? O {(-2, 1), (7,5), ( – 4,0), (3, 1), (0, – 6)} O {(1, 1), (1, 3), (1,5), (1,7), (1,9)} 0 {(2, – 7), (6,5), ( – 3,9), (2, 0), ( – 5,3)} o {(1, 2), (2, 3), (3, 4), (3, 3), (2, 2), (1, 1)} Submit Pass Don't know answer​