Question

a and b have opposite directions, and they both have a magnitude of 7. What must be true about a and b? a. They are equal and parallel. c. They are opposites, but not parallel. b. They are equal, but not parallel. d. They are opposites and parallel.

Answer 1

guy above is right

Explanation:

Answer 2

Answer: Option d

They are opposites and parallel.

Explanation:

Although they have the same magnitude, one can not say that a and b are equal because they have opposite directions.

If we know that both vectors have opposite directions then necessarily a and b must be parallel.

So what we know about a and b is that they are parallel and opposite.

The correct answer is the option d