# 56 7 11 points

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7. 1/1 points | Previous Answers (a) Let P be a point not on the line L that passes through the points Q and R . Show that the distance d from the point P to the line L where and Nothing to enter for (a); after submitting your answer for (b) check your work against the answer key . (b) Use the formula in part (a) to find the distance from the point P (1, 1, 1) to the line through and Thus the distance is d = | a × b | | a a = QR b = . Q (0, 9 , 7 ) R (−1, 2 , is Solution or Explanation is | QP 6 ). PS QP b | | a | −6 . QP 15 . 1430 51
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13-9-9 HW #4 6/6