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Lisa [10]
2 years ago
9

Can you guys check these :) I’ll give brainleist :)

Mathematics
1 answer:
stiv31 [10]2 years ago
8 0

Answer:

9. No

10. Yes

Step-by-step explanation:

The first one is not, since you have (3, 3) and (3, 9).  In a function, each x maps to a single y.

The second one is since every x appears only once.

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