Find sets of parametric equations and symmetric equations of the line that passes through the given point and is parallel to the given vector or line. (For each line, write the direction numbers as integers.) Point Parallel to (0, 0, 0) v = (9, 1, 7) (a) parametric equations (Enter your answers as a comma-separated list.) (b) symmetric equations O 7x = y = 9z O 9x = y = 7z OZZY =