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One is the negative reciprocal of the other. That is, the product of the two slopes is -1. UNLESS one of them is zero, in which case the slope of the other is infinite.

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Q: Definition of slopes of perpendicular lines?
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Would perpendicular lines have negative or positive slopes?

I believe they have Negative Slopes as stated by my Geometry Book. "Perpendicular Lines Have Slopes Which Are Negative ___"


How do you calculate parallel and perpendicular lines in a given plane?

Take any two lines and look at their slopes. -- If the slopes are equal, then the lines are parallel. -- If the product of the slopes is -1, then the lines are perpendicular.


How do you use slope to determine if two lines are perpendicular?

You have to know the slopes of both lines. -- Take the two slopes. -- The lines are perpendicular if (one slope) = -1/(the other slope), or the product of the slopes equals to -1.


Is the measure of the angle formed by two intersecting perpendicular lines is 90 degrees?

Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.


How do parallel and perpendicular slopes compare or their y intercept?

There is no relationship between the slopes of parallel or perpendicular lines and their y-intercepts.

Related questions

If two lines are their slopes are negative reciprocals?

If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.If the lines are perpendicular, their slopes are negative reciprocals.


Would perpendicular lines have negative or positive slopes?

I believe they have Negative Slopes as stated by my Geometry Book. "Perpendicular Lines Have Slopes Which Are Negative ___"


Do Perpendicular lines have opposite reciprocal slopes?

Actually it IS. perpendicular lines have opposite reciprocal slopes and parallel lines have the same slope.


What pair of slopes could represent perpendicular lines?

Negative reciprocal slopes always represent perpendicular lines.


How do you calculate parallel and perpendicular lines in a given plane?

Take any two lines and look at their slopes. -- If the slopes are equal, then the lines are parallel. -- If the product of the slopes is -1, then the lines are perpendicular.


What are the slopes of perpendicular lines called?

Slopes of line perpendicular to the x-axis are undefined.


True or false perpendicular lines have opposite slopes?

Not for the usual definition of the word "opposite." The perpendicular of a line having a slope of 2 has a slope of -0.5.


If two lines have slopes that are negative reciprocals of each other then they are if they have slopes that are the same then they are?

negative reciprocal slopes ---> the lines are perpendicular equal slopes ---> the lines are parallel


What is the definition of a slope of parallel lines?

Horizontal lines have a slope of zero, and the slope of vertical lines is undefined. Parallel lines have equal slopes, and perpendicular lines have slopes that are negative reciprocals of each other. So we can say that: Two nonvertical lines are parallel if and only if they have the same slope. Two lines are perpendicular if and only if their slopes are negative reciprocals of each other. That is, if the slopes are m1 and m2, then: m1 = - 1/m2 or (m1)(m2) = -1


When is the product of the slopes of two perpendicular lines not equal to -1?

When the perpendicular lines are horizontal and vertical.


How do you use slope to determine if two lines are perpendicular?

You have to know the slopes of both lines. -- Take the two slopes. -- The lines are perpendicular if (one slope) = -1/(the other slope), or the product of the slopes equals to -1.


Is the measure of the angle formed by two intersecting perpendicular lines is 90 degrees?

Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.Yes, this can be considered the definition of perpendicular lines (or alternately, the definition of angular measurement). Perpendicular lines are lines that form an angle of 90 degrees.