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# How do you find the equation of parallel lines?

2 years ago

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Bart Abshire

1 Answer

Lissie
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The equation of a straight line is y = mx + c

Parallel lines will have the same gradient, so the value of m is the same for each line

If you're just finding "any" line parallel to an original, pick any value of c. If you need parallel lines passing through a particular point then plug the coordinates of that point into the straight line equation with the value of m that you already found and rearrange to find c.

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