Which set or ordered pairs represents y as a unction Or X! (-2,3), (-2, 2), (-2, 1), (-2, 0)
(10, 15), (5, 1), (10, 6), (6, 10)
(-11, 2), (3,8), (3, 2), (2, 2)
((1,6), (2, 5), (10, 5), (-17, 8)

A relation is said to be a function when every element in the domain has one and only one distinct image in the co- domain.

In the first three options , one single element in domain has more than one image.

(-2,3), (-2, 2), (-2, 1), (-2, 0)

here -2 as an element in the domain has 3,2,1,0 has image> so not a function

(10, 15), (5, 1), (10, 6), (6, 10)

Here 10 , an element in the domain has 15,6 as image> so not a function

(-11, 2), (3,8), (3, 2), (2, 2)

Here 3, as an element in the domain has 8 and 2 as image> so not a function

So, OPTION D

(1,6), (2, 5), (10, 5), (-17, 8)