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Determine if (8,9) , (9,10), (10,11), (11,12) is a function

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Hi there!

These points do make up a function! This is because each x value has one y value, making it a function. If there were two points with an x value of 6, this would not be a function.
~There is one input for every output~

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
User Med Larbi Sentissi
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