Quadrilateral ABCD has vertices of A(-5, 3), B(0, 1), C(-1, -3), and D(-6, -1). Is ABCD a parallelogram? Justify your answer with slopes.

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.

What is not true about kl and mn? what is mn? (show )

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.