epresents a function?
{(2, 3), (3, 4), (5, 6), (2, 9)}
{(4, 2), (5,2), (6, 2), (9, 2)}
{(1, 2), (1, 3), (1, 4), (1, 5)}
{(-4, 9), (-8, -12), (-4, -15), (-8, -21)}

Respuesta :

Answer:

No, it does not represent a function

Step-by-step explanation:

A function can be described as a set of points where each x coordinate has 1 corresponding Y coordinate

1 has multiple different Y coordinates

2 has multiple different Y coordinates

-4 has multiple different Y coordinates

Answer:

Only the second one

Step-by-step explanation:

All of the others have multiple values for 'x'

  a function can only have one value for each value of x

     Example: the first one      when x = 2   it has two 'y' values   3 and 9