Question

How many hours will Sherwin most likely sleep if he consumes 9 cups of coffee?

Answer 1

Link to graph:
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Answers:
1, because y = −x + 10
2, because y = −x + 10
9, because y = −x + 10
10, because y = −x + 10

I chose A (1, because y = -x + 10)
Am I right or wrong?

Answer 2

that is correct