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Help ASAP please!!

A. All the above

B. I, III, IV

C. I and IV only

D. II and III only

Help ASAP please!! A. All the above B. I, III, IV C. I and IV only D. II and III only-example-1
User DeSelby
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1 Answer

2 votes
B.
I forgot what it was called but there’s a trick.
If you draw a vertical line through a heap and line meets two points, it’s not a function. If I only meets one point, it’s a function.
User Loushou
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