Which set of ordered pairs does not represent a function? O {(7,5), (-6,0), (8,-9),(-1,-9)}
O {(0,–2), (3,9), (-5, -1),(-9,9)}
O{(-5,-4), (1, -1), (2,5), (3,5)}
O{(-9,9), (-6,0), (-9,8), (-1,-2)}

4

Step-by-step explanation:

Functions can not have two x-values. Number 4 has two -9's, therefore it is not a funtion.

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743