The image of a point is given by the rule Ty = -x(x, y) → (4,9). What are the coordinates of its pre-image? 0 (-9, 4)
O(-4,-9)
(4,9)
(9, 4)

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.

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Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder