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Question 3 600 400 A 200 0 Figure 1 A. The heights (at the shoulders) are 600mm, 470mm, 170mm, 430mm and 300mm. Determine the mean B. A straight line passes through the point P(-3, 5) and has a gradient of =. Show that this line is parallel to the line 2x - 3y = 0. C. The line I passes through the points S(4, 6) and T(0, -2). Determine the: i. gradient of the line I ii. equation of the line I iii. midpoint of the line segment ST iv. length of the line segment ST