Grade 12 calculus. Multiple choice. Please include rough notes (doesn't have to be fully complete). Answer ASAP

Question 6 (1 point) If k is any positive number, the measure of the angle between vectors a k, k and b = -3, 4 is : O it cannot be determined O 36.9 deg O 53.1 deg 81.9 degQuestion 7 (1 point) The Cartesian equation of the plane through A(-2,1,4) with a normal vector n(3, -1, 2) to the plane is: -2x + y + 4z + 1 =0 3x - y + 2z - 1 = 0 3x - y + 2z + 1 = 0 -2x + y + 4z - 1 = 0 Question 8 (1 point) The parametric equations of a line going through point (-2, 1, 5) and parallel to the direction vector (4, -1, -7) are: *= -4+ 2t y =1-t Z = 7 - 5t O X = -4 - 2t y = 1+t Z = 7+ 5t x = -2 - 4t y =1+t Z = 5+7t x= -2+ 4t y =1-t Z = 5 - 7t Question 9 (1 point) The angle between planes x + y + z = 0 and x + 2y + 3z = 6 is: 67.792 deg 37.263 deg 22.208 deg 52.737Question 10 (1 point) The equation of the plane that passes through A(2, 1, -5) , B(3, -2, 0) and C(-1, 4, -3) is: 21x + 17y + 6z - 29 = 0 -21x- 17y + 6z + 29 = 0 21x + 17y - 6z + 29 = 0 21x- 17y + 6z - 29 = 0 Question 11 (1 point) Which vector equation matches the vector operation shown in the diagram below? w 21. utv=w Ou-v=-W Ou-V=W vu=-W