8
algebraAre the lines and parallel or perpendicular?
A
Neither
B
Parallel
C
Perpendicular
D
Coincident
Correct Answer: A
Choice A is the correct answer. Compare slopes.
- Line 1: .
- Line 2: . Slope is .
- Compare: vs . They are reciprocals, but NOT negative reciprocals. Signs are the same.
- Result: Neither.
💡 Strategic Tip: For perpendicularity, signs MUST be opposite.
Choice B is incorrect because slopes differ. Choice C is incorrect because signs match. Choice D is incorrect.