Which relation is not a function?
[control] a. ((6., 5). (5.-6)
[control] b. ((6,-5). (-6, 5). (5.-6))
[control] c. ,-5). (6.-5. (5.-6)}
[control] d. ,.-.-5))

D.

Step-by-step explanation:

That would be D because there is a repetition of x = -6.

-6 maps to -6, 5 and -5 which is not allowed in a function.

Functions can be one-to-one or many-to-one but not one-to-many.

there are no figures how am i supposed to answer this question

step-by-step explanation:

there are infinitely many solutions.