3 years ago

Which of the following relations are functions?

Mathematics

2 answers:

mr_godi [17]3 years ago

8 0

D and A..................

Alisiya [41]3 years ago

7 0

{(c,e),(c,d),(c,b)} is NOT a function since the input c has multiple outputs (e,d,b). So choice B is out

{(b,b),(c,d),(d,c),(c,a)} is NOT a function either. The input 'c' corresponds to the output 'd' and 'a' at the same time. So choice C is out too

Choices A and D are the answer. They are functions since any given input corresponds to exactly one output.

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