Given vectors u = ⟨–2, 1⟩ and v = ⟨4, –2⟩, which statement is true concerning u and v?

Since v = ⟨4, −2⟩ = −2⟨−2, 1⟩ = −2u, the vectors are scalar multiples with a negative scale factor. That means they point in opposite directions and form a 180° angle, not an obtuse angle near 90° or 127°. The true statement is that the vectors point in opposite directions.

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