Question

What is the C'' coordinate?

A triangle has points A(1,2) B (1,6) and C (3,6) and is reflected over the x axis and then over the line y=x. A''B''C'' are the coordinates of the reflected image.

Answer 1

Over x axis: (x,y)-->(x,-y)
Over y=x: (x,y)-->(y,x)