when and why is there no solution to some absolute value equations?

Algebra
Tutor: None Selected Time limit: 1 Day

I don't understand

Nov 11th, 2014

Consider y =2x+4

and 2y =4x+9

2y =4x+9

2y =4x+8

Subtracting

0 =1 which is absurd.

These equations are not consistent.

(in fact these are equations of parallel lines which do not intersect)

Nov 11th, 2014

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Nov 11th, 2014
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Nov 11th, 2014
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