1×5 or 5×1 would be a factual of it
Yes you can write a ratio in more than one way
Slope equals rise over the run
so if slope = 5 then the rise also equals 5 and the run is 1
Coordinates of point C (2,-1). Explanation is in the attachment.
The width is 10.9. When you need to find the length or width when you have the area you divide the area by given number you have so for this problem you divide 82.84 by 7.6 to get 10.9 meters.