Sophia was comparing the price of ground beef at two stores. The equation y=6.1xy=6.1x represents the total cost, in dollars and cents, yy, that it costs for xx pounds of ground beef at SuperGrocery B. The graph below represents the total cost, in dollars and cents, yy, that it costs for xx pounds of ground beef at SuperGrocery A. How much would you save, per pound, if you buy your ground beef at SuperGrocery A, rather than SuperGrocery B?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?