SOLUTION: does the following rule defines y as a function of x or no x=|y+10|

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Question 1173977: does the following rule defines y as a function of x or no
x=|y+10|
Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
.

No,

BECAUSE  for every given value of  x  it defines  TWO  values of  y,

while a  TRUE function  MUST  DEFINE  a  unique value of y.