SOLUTION: Which relation is not a function? A.) y=3x-4, b.) y+5=-4x, c.) x=-6, d.) -y-x=-7. Thanks for your help.

Question 924149: Which relation is not a function? A.) y=3x-4, b.) y+5=-4x, c.) x=-6, d.) -y-x=-7. Thanks for your help.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
by the vertical line test, the following is not a function because a single value of x has more than one value of y:
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c) x=-6
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