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Volunteer Informati... P D Question 11 4.5 pts Consider the quadric surface 2y2 + z2 - a = 0 Which of the following is/are correct? P. The traces in the plane parallel to the xz-plane are parabolas. 898 Q. The traces in the plane parallel to the xy-plane are hyperbolas. 244 Sy R. The graph of the surface is O R only O P only O Q only O Q and R O P and R4.5 pts 2 D Question 8 88 8 Find the arc length of the curve r(t) = 2ti+ et j+ 2e- k from t = 0 to t = 1. Oet O et O e O et 3 O e +1O Q and R O P and R D Question 12 5 pts Given the point A (0, 5, -2), find the following. 1. A is on the [ Select ] 2. The plane containing A that is parallel to the xz-plane is [ Select ]