AHS-Matura Practice Questions - Austria AHS-Reifeprüfung (Academic Matura) Exam

Two vectors in R^2 are given by a = (3, -4) and b = (k, 6). For which value of k are vectors a and b orthogonal (perpendicular)?

k = 8 k = -8 k = 4.5 k = -4.5

k = 8

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