9 Which of the following statements are wrong A The gradient of the r-axis is o B. By examining the following table a person may be conclude that all these points lie on the y-ads Then = 0 2. c There is no answer for the gradient of the y-axis because it is perfectly upright, without any tilting D. = 3 is a straight line on the xy plane the only value that can exist for x on this line is x = 0