Math

Which is NOT a function?
A.y-x=6
B.y=2x
C.x=-2
D.y+x=12
I think the answer is B, but I'm not too sure. please help me I'm relly struggling

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asked by Erika<3
  1. Well, a function is a expression that uses one or more variables.

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  2. oooh so would it be C?

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    posted by Erika<3
  3. @Emma Helper did you know you can help people on Brainly! I help people here and at brainy!

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  4. yes, C
    a function is a relation between two variables. C has only a single variable.

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    posted by oobleck
  5. Thank you @oobleck

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    posted by Erika<3
  6. Peer Tutor, oooh cool! I'll do that

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