Eleven subtract nine is two; eight adding three is eleven (2,11)
It’s a positive slope, constant slope, and increasing function. Because it’s a straight line going diagonally to the top right, you know the slope is positive, constant, and the function is positive.
so the coat went down from 50 to 35, namely 15.
if we take 50 to be the 100%, what is 15 off of it in percentage?

the answer is 8.962790 because it is rounded to the nearest millionth
I hope this helps you