Answer:
J is a function
K is not a function
Explanation:
A function is when every input (x) has only one output (y).
J
The ordered pairs are:
(-4,2) ( -8,2) (4, 1) ( 5,1) Every x has only 1 y.
K
The ordered pairs are:
(4,-3) (3, -5) (2, -5) (2, -4)
the input (x) 2 has two outputs (-5, and -4) This is why this is not a function.