What are parallel lines?
Parallel lines are lines that are paralleled to each other on a line graph.In order for the lines to be parallel they have to have the same slope. For example, if the equation is y=2x+1, a parallel line would be y=2x-5. Also, they can't have the same y-intercept because it will be the same line, and it wouldn't be paralleled.
In the graph below the lines are paralleled. The equation of the black line is 2x+2. The reason they are paralleled is because the blue equation has the same slope and a different y intercept.
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