A line has slope 2. What is the slope of a line perpendicular to it?
Answer and explanation
Correct answer: B.
- Step 1: For perpendicular lines . Step 2. With , . **Answer: . Why not the others:** both the reciprocal and the sign change are needed.
Practise more Algebra, Functions, Geometry and Probability.
Free questions with an explanation for every one, and full timed Državna Matura (Serbia) mock tests.