6
QuizMultiple Choice

Dot Product and Work — Quiz

Question 6 • Precalculus

Consider vector u with components five comma negative two and vector v with components ten comma negative four What is the relationship between vector u and vector v ?

Answer
A
The vectors point in opposite directions.
B
The vectors form an acute angle.
C
The vectors point in the same direction.
D
The vectors form an obtuse angle.

Explanation

Vector v = (10, −4) is twice vector u = (5, −2), since 2(5, −2) = (10, −4). Multiplying a vector by a positive number changes its length but not its direction, so the vectors point in the same direction.

AI-written and checked against the verified answer.

Previous
Next