The picture is omitting the question
9x es la respuesta porqe el -2xy se va por el
Reflecting across the x axis maintains the same x coordinate, but changes the sign of the y coordinate.
So, the transformation is

A square has all sides of the same length. This means that the length and width are both 14 miles. The area of a square is Length times width, or 14 times 14. This comes out to be 196 miles squared
First you divide 2 on the whole thing to get x^2 by itself then -b/2a and results in (-3,-1)