Question

Triangle XYZ is shown on the coordinate plane below.



If triangle XYZ is reflected across the line y = 1 to create triangle X’Y’Z’, what is the ordered pair of X’?

Answer 1

since you're reflecting over a horizontal line, then the x coordinates will not change but the y will.

since the distance from X to y=1 is 2, the then X' will be 4 units directly above X.. in other words, just add 4 to the y coordinate of X...

X' has coordinates (3, 3)

Answer 2

thanks