4 2/7*t+9/14 if t =2 1/6

Will give brainliest summations with algebraic expressions image shown

Which set of reflections would carry trapezoid abcd onto itself? a) x-axis, y=x, y-axis, x-axis b) x-axis, y-axis, x-axis c) y=x, x-axis, x-axis d) y-axis, x-axis, y-axis, x-axis

How do you use the elimination method for this question? explain, because i really want to understand!