You can put this solution on YOUR website! -40x-8y=8---->-8y=40x+8--->y=-5x-1........eq 1
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-5x-y=17----->-y=5x+17---->y=-5x-17.......eq 2
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these 2 equations have the same slope of -5 and different y intercepts(so they arent the same line). Therefore these lines are parallel to each other
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