Question 4: Show work. Find r so that the line through (2, 6) and (-4, r) is parallel to 2x - 3y = 4 perpendicular to x + 2y = 1 Answer: Answer Question 5 The pressure P of water on a diver's body is a linear function of the diver's depth, x. At the water's surface, the pressure is 1 atmosphere. At a depth of 100 ft, the pressure is about 3.92 atmospheres. (a) Find a linear function that relates P to x. (b) Compute the pressure, to the nearest hundredth, at a depth of 10 fathoms (60 ft). Make sure to show the work leading to the answer. Answer: (a)