Which of the sets of ordered pairs represents a function?

a = {(−4, 5), (1, −1), (2, −2), (2, 3)}

b = {(2, 2), (3, −2), (9, 3), (9, −3)}

Neither set A nor set B represents a function.  

Step-by-step explanation:

According to the definition of a function, for each input there exists a unique output. In other word for each value of x there exists unique value of y.

In set A we have four ordered pair (-4,5),(1,-1),(2,-2) and (2,3).

It means for x=2, we have two values of y, i.e., -2 and 3.

Since for a single value of x there exist more than one value of y, therefore set A is not a function.

In set B we have four ordered pair (2,2),(3,-2),(9,3) and (9,-3).

It means for x=9, we have two values of y, i.e., -3 and 3.

Since for a single value of x there exist more than one value of y, therefore set B is not a function.

neither A or B

Step-by-step explanation:

both have repeated inputs and outputs

correct answer:

i^31 = -i

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.