Actually it IS. perpendicular lines have opposite reciprocal slopes and parallel lines have the same slope.
2
-1
Perpendicular lines have slopes that the inverse of each other. If one line has a slope of 1/3, the other has a slop of 3/1
They are negative reciprocals Ex -1/2 and 2
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.
I believe they have Negative Slopes as stated by my Geometry Book. "Perpendicular Lines Have Slopes Which Are Negative ___"
Actually it IS. perpendicular lines have opposite reciprocal slopes and parallel lines have the same slope.
Negative reciprocal slopes always represent perpendicular lines.
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.
negative reciprocal slopes ---> the lines are perpendicular equal slopes ---> the lines are parallel
When the perpendicular lines are horizontal and vertical.
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.
It took me forever to find this answer, but the answer is "Reciprocals" Good Luck!
The slopes of two perpendicular lines are negative inverses of each other. In other words, the two slopes when multiplied together equal -1.
2
There is no relationship between the slopes of parallel or perpendicular lines and their y-intercepts.