Matrix word problem

Question

Kayla and Mario are playing with a football at the park on a windy day. Mark throws the football straight up in the air, and a gust of wind blows it 10 feet west and 4 feet south from Mark.If |x over Y| represents the original location of the football, write a matrix that represents the location of the translated ball.

Answer 1

I believe the answer is  | (x - 10) over (y - 4) |.

 

If the original location is | x over y |, I believe that west is considered the negative direction for x while south is the negative direction for y.