Question

question 9 of 10 how do you know if two line segments are parallel? a. the slope of one is the negative of the slope of the other. b. their slopes are reciprocals. c. their slopes are equal. d. their slopes are negative reciprocals.

Explanation:

In coordinate - geometry, two non - vertical line segments are parallel if and only if their slopes are equal. If the slope of one line is the negative of the slope of the other, they are not parallel. If slopes are reciprocals or negative reciprocals, they are not parallel either.

Answer:

D. Their slopes are equal.