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Algebra
Question

Which of the following pairs of lines are not parallel?

 

\(y=-2, y=4\)

\(x+y=3, x-y=3\)

\(y=\frac{1}{2}x+5,y=\frac{1}{2}x-4\)

\(2x+y=-5, 6x+3y=9\)

Answer

\(x+y=3, x-y=3\)

Solution
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