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Concept

Coincidental Lines

Coincidental lines are any lines that have the same slope and

y

-intercept. Coincidental lines intersect at every point because they lie on top of one another. For example, the lines

y = 2 x + 1

and

2 y - 4 x = 2

are coincidental.

The name coincident lines comes from the word coincide, which means to exist together or occur at the same time.

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