Question

7) Triangle ABC has vertices A(-1,1), B(1,3) and C(4,1). The image of ABC after the transformation r y=x is A’ B’ C’. State and label the coordinates of A’ B’ C’

Answer 1

In this case the answer is very simple .

Step 01:

Data

A (-1,1) B (1,3) C (4,1)

Step 02:

reflection y = x

(x , y ) ====> (-x , -y )

A' ( 1 , -1 )

B' (-1 , -3)

C' (-4 , -1)

Those would be the new coordinates of the triangle.