Question 4 Identify a vector that is orthogonal to both u = (1, 0, 2) and v = (1, 1, -1). (-2, 3, 1) (2, -3, -1) (-2, 0, 1) (-1, 0, 2) Question 5 Which of the expressions below represents a plane through (2, -1, 3) that is perpendicular to the line described by r(t) = (1 + t, 5 - 4t, 5t), -inf < t < inf. x = 2 + t, y = 1 - 4t, z = 3 + 5t No enough information x - 4y + 5z = 21 x = 1 + 2t, y = 5 - t, z = 3t 2x - y + 3z = 14
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