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22 Apr 2017, 23:07
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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67% (00:18) correct
33%
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wrong
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Is y = 3?
(y - 3)(x - 4) = 0
(x - 4) = 0
(y - 3)(x - 4) = 0
(x - 4) = 0
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23 Apr 2017, 01:06
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(y-3)(x-4) yields y=3 or x=4 and most importantly, we are suppose to take the union of these two cases and which to me results in a unique value of y. IMO A
23 Apr 2017, 01:22
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attari92
(y-3)(x-4) yields y=3 or x=4 and most importantly, we are suppose to take the union of these two cases and which to me results in a unique value of y. IMO A
If X = 4
Y doesn't have a unique value in (y-3)(x-4)
You see when You take the union It includes cases where Y is 3 and X not equal 4, Y not equal to 3 X =4 and Y=3,X=4...
You only considered one case
just as A U B includes A intersection B....
Hope its clear
