Question 1199016
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Determine whether each relation defines a function

(a) x-4y=8

(b) y=2x+3

(c) 1/2x=3
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(a)  Yes, because you can express y as a function of x.


(b)  Yes, because you can express y as a function of x.


(c)  No, since it is not a  " relation "  in a mathematical sense,
     and it does not define any y-values.
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