What is the constant of variation for xy=12

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

The product of sin 30 degrees and sin 60 degrees is same as the product of

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!