Which set of ordered pairs represents a function?

a) {(0, 1), (1,3), (1,5), (2, 3)}

b) {(0, 0), (1, 2), (2, 6), (2, 3)}

c) {(0, 0), (0, 2), (2.0), (2, 4)}

d) {(0.2), (1, 4), (2.6), (3, 6)}

D) {(0.2), (1, 4), (2.6), (3, 6)}

Step-by-step explanation:

a relation from a set x (first number) to a set y (second number) is called a function if each element of X is related to exactly one element in Y. 

"D" will be your answer.

Explanation is provided in the image attached.

180

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80