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which one is a nonlinear function?

 y=3x(3)

3x+2y=10

y=15.3

y=1/4x-2

 Apr 6, 2019
 #1
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Hello?

 Apr 6, 2019
 #2
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I'm pretty sure it's the fourth one because it's none of the first three, but you need to use parentheses to identify what goes with what. Is it one-fourth x or is it 1 over 4x, and so on.  You could verify which one it is by actually plotting a few points on a graph.   

 

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 Apr 6, 2019
 #3
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I'm assuming that the 4th one is  y  = (1/4)x - 2

 

If the first one is  y = 3x^3......then this is non-linear

 

All the rest ARE linear

 

[ The third one is a horizontal line at y = 15.3  ]

 

cool cool cool

 Apr 6, 2019
edited by CPhill  Apr 6, 2019
 #4
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All the rest ARE linear   

 

Not if that last one is 1 over 4x.  I'm not going to answer any more of these where you have to guess what the problem even is. 

 

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 Apr 7, 2019

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