Question

If two lines are anti-parallel then their slopes ?

A. are equal
B. are opposite
C. Product of slopes are -1
D. Both A & B

Answer 1

A.

Explanation:

First, we have to define what does anti-parallel means.

Anti-parallel: parallel but moving or oriented in opposite directions.

Now, let us discuss the options.

A. Slopes are equal.

Equal slopes represent parallel lines. Hence, option A is correct.

B. Slopes are opposite.

Opposite slopes represent non-parallel lines. Hence, option B is wrong.

C. Product of slopes is -1.

Negative reciprocal slopes are perpendicular. Hence, option C is wrong.

D. Both A and B.

Option A is correct, whereas option B is wrong. Hence option D is wrong.

That only leaves us with option A, which is the correct answer.