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Sagot :
Answer:
A is a function.
Step-by-step explanation:
All the others are one-to-many relations.
For example in B, 3 maps to 10 and also maps to 30 ( one - to - many).
A function is a one-to-one or many-to-one mapping.
Answer:
- Option A
Step-by-step explanation:
Options B, C and D have repeat x-values with different y-values.
The relationship is many-to-one.
If graphed, those point appear on a vertical line.
Option A has one-to-one relation, so is the only functional relationship
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