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23-02-2019
Mathematics

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What do the following two equations represent? -4x-5y=-4 and 4x+5y=4

Equal lines

Parallel lines

Perpendicular lines

none of the above

Relax

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23-02-2019

I believe these are equal lines.
If you multiply the first through by -1, you get the second, 4x+5y=4

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