PRC-2 · Chapter 2 · Question 4 of 45
If a straight line has a slope of 2, what is the slope of a line that is perfectly perpendicular to it?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: D) -0.5
Explanation
Two lines are perpendicular if the product of their slopes is -1 (m1 * m2 = -1). If m1 = 2, then m2 must be -1 / 2 = -0.5.
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