If the slope of the line is negative, then the slope of a line perpendicular to may be positive or negative?
A) negative
B) positive

Question

If the slope of the line  is negative, then the slope of a line  perpendicular to  may be positive or negative?
A) negative 
B) positive

Quizplus · Accepted Answer

If a line has a negative slope, then any line perpendicular to it will have a positive slope. This is because the product of the slopes of two perpendicular lines is always equal to -1. If one of the slopes is negative, then the other must be positive. Therefore, the slope of a line perpendicular to a line with a negative slope may only be positive.

If the Slope of the Line Is Negative, Then