Question

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. What is the B" coordinate?

Answer 1

reflecting 1,6 across the x will be 1, -6 
then y=x will reverse it making (-6, 1)

-6, 1