ACTIVITY 2: In the sketch below, the coordinates of the vertices of AABC are A(1 : -2), B(-3; 2) and (3:4) with K(O; -1) on AB and L. :) on BC. C (3 L:12 B(-32). K( 0-1) A(1.-2) 1.1 Calculate the gradients of AC and KL. (1) 1.2 What can you deduce about lines AC and KL? Give a reason for your answer. (1)

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.