Mark H. answered 09/14/14
Tutor
5
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Computer Science & Mathematics
If two lines are parallel they have no intersecting points. In order for this to be true every parallel line must have the same slope but a different intercept. So to convince yourself, graph y=2x-3, y=2x-2, y=2x-1, y=2x, y=2x+1... After the first couple this should not take long.