Question

Trapezoid QRST is graphed on the set of axes below.

Under which transformation will there be no invariant points?

Answer 1

(C) reflection on y = -x

Explanation:

There are vertices on the x-axis, the y-axis, and the line y=x (point Q(3, 3)), so reflection on any of those lines will result in a point being invariant. The only line of reflection among the choices given that does not contain a vertex of the figure is y = -x.

reflection on y = -x will give no invariant points