...i __ ,! Find a function r(t) that describes the line or line segment. The line segment from P(2, 7, 3) to Q(3, 1, 1) A) r(t) = (2 + t, 7 6t, 3 2t); 1 _<_ t s b r _ od write the equation for plane. plane through point p and normal to n="(-6," o a c d parallel surface by name. x2 ellipsoid hyperbolic cylinder elliptic cone hyperboloid of one sheetmatch with it defines. figure hs>