Which set of ordered pairs does not represent a function? O{(-3, -3), (6, -1), (4, -4), (9, -3)}
O{(-5,8), (4,3), (-4, -4), (2,8)}
O {(6, -1), (-2, -1), (-8, -4), (5,9)}
O {(4, -2), (1,9),(-1,2), (1,4)}

So I haven't been in Algebra class in a while so have mercy...

Step-by-step explanation:

The first set of ordered pairs is not a function.

The X value of 7 repeats, which means that it is not a function.

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2

faster, im not sure why but i know it is faster