8
QuizMultiple Choice

Modeling with Vector Quantities — Test

Question 8 • Precalculus

Given vector u with components two comma negative eight and vector v with components eight comma negative two , what is vector u times vector v ?

Answer
A
0
B
32
C
negative 68
D
negative 60

Explanation

Multiplying the vectors here means finding their dot product: multiply corresponding components and add the results. For u = (2, −8) and v = (8, −2), this gives 2 × 8 + (−8) × (−2) = 16 + 16 = 32. The correct choice is 32.

AI-written and checked against the verified answer.

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