Question

question 8 of 10
how do you know if two line segments are perpendicular?
a. their slopes are reciprocals.
b. their slopes are negative reciprocals.
c. their slopes are equal.
d. the slope of one is the negative of the slope of the other

Explanation:

In coordinate - geometry, if two non - vertical line segments have slopes \(m_1\) and \(m_2\), they are perpendicular when \(m_1\times m_2=- 1\), which means the slopes are negative reciprocals of each other.

Answer:

B. Their slopes are negative reciprocals.