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Question 7 (3 points) Find the equation of the following lines in the required form: 1. through the points P(1, -3, 2) and Q(9, 2, 0) [vector equation] 2. with direction vector d = (5, 3, -4) and z-intercept 7 [symmetric equations] 3. through T(2, -5) and perpendicular to the line 3x - by = 5 [scalar equation] Blank # 1 Blank # 2 A Blank # 3 Question 8 (1 point) For the points A(1, 5, -7) and B(3, 0, 1) vector AB has coordinates Question 9 (1 point) If the point (4, -4, g) is on the line (x, y, z) = (8, 0, -2) + t(1, 1, 3), the value of g is Question 10 (1 point) The vector V = (3, 4) is projected onto the x-axis The length of the projection is Question 11 (1 point) The dot product of vectors p= (3, -5) and q = (15,9) is