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IB Mathematics SL, slope of a line, perpendicular & parallel lines

How can we find the slope of the line which is perpendicular to the line ?

Thanks

How can we find the slope of the line which is perpendicular to the line ?

Thanks

- Jane
**Posts:**0**Joined:**Tue Mar 19, 2013 8:47 pm

IB Math SL, gradient of a line, perpendicular - parallel lines

If two lines are perpendicular their slopes are negative reciprocals and if two lines are parallel have equal slopes.

Regarding your question about the gradient of the line which is perpendicular to the line .

Let be the required slope then we have the following relation:

Hope these help!

If two lines are perpendicular their slopes are negative reciprocals and if two lines are parallel have equal slopes.

Regarding your question about the gradient of the line which is perpendicular to the line .

Let be the required slope then we have the following relation:

Hope these help!

- nicole
**Posts:**0**Joined:**Mon Jan 28, 2013 8:10 pm

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