Question

4.4.3 Quiz: Parallel and Perpendicular Lines

Question 9 of 10
If two lines are perpendicular, which statement must be true?
A. The slopes of the two lines are undefined.
B. The slopes of the two lines are negative reciprocals.
C. The slopes of the two lines are equal.
D. The slopes of the two lines are zero.
SUBMIT
2

Answer 1

The answer is B). The slopes of the two lines are negative reciprocals