Practice problem
Suppose two perpendicular lines have slopes m1m_1m1 and m2m_2m2. What is the quotient m1÷m2m_1 \div m_2m1÷m2 in terms of m1m_1m1?
m1m_1m1
−m1-m_1−m1
(m1)2(m_1)^2(m1)2
−(m1)2-(m_1)^2−(m1)2
Type a concept, like “slope” or “photosynthesis”.