Respuesta :

Q = (12,-1)

R= (7,1)

When reflecting a coordinate point (x,y) across the line y= x, the new coordinate is (y,x)

a)

Q'= (-1,12)

R'= (1,7)

b) Translation: (x,y) = (x-3, y-7)

Q´= (12-3,-1-7) = (9,-8)

R'= (7-3,1-7) = (4,-6)