SOLUTION: Which of the following relations define y as a function of x? Explain why or why not for each. A) y = 3x^2 + 4 B) (2,6),(3,8),(2,-2),(-1,6) C) y = |x| D) x = y^2

Algebra ->  Rational-functions -> SOLUTION: Which of the following relations define y as a function of x? Explain why or why not for each. A) y = 3x^2 + 4 B) (2,6),(3,8),(2,-2),(-1,6) C) y = |x| D) x = y^2      Log On


   

Question 96758: Which of the following relations define y as a function of x? Explain why or why not for each.
A) y = 3x^2 + 4
B) (2,6),(3,8),(2,-2),(-1,6)
C) y = |x|
D) x = y^2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Which of the following relations define y as a function of x? Explain why or why not for each.
A) y = 3x^2 + 4
y is a function of x because for each x value there is one y-value.
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B) (2,6),(3,8),(2,-2),(-1,6)
y is not a function of x because when x=2 there are two different values for y.
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C) y = |x|
y is a function of x.
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D) x = y^2
y is not a function of x.
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Cheers,
Stan H.