Determine whether the relation is a function. Give the domain and range.{(1, -1), (-2, 1), (12, 7), (6, 12), (9, -4)}
A. function; domain: {-2, 1, 6, 9, 12}; range: {-1, -4, 1, 7, 12}
B. not a function; domain: {-2, 6, 12}; range: {-1, -4, 1, 7, 12}
Answer: A
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A. 
?2
B. 
?2
C. 
?
D. 
?2
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A. -4
B. 0
C. - 
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