Question

The vertices of polygon ABCD are at A(1, 1), B(2, 3), C(3, 2), and D(2, 1). ABCD is reflected across the x-axis and translated 2 units up to form polygon A′B′C′D′. Match each vertex of polygon A′B′C′D′ to its coordinates.

Answer 1

A*(1,-1+2) =(1,1)

B*(2,-3+2)=(2,-1)

C* (3,-2+2) =(3,0)

D* (2,+1+2)=(2, 3)

that is no change in x

reflection about x axis change the y into negative ( change the sign)

then 2 units up means add 2 with y