The given rule of translation represents a vertical translation 1 unit down.
(x,y) → (x,y-1)
To perform the translation, we have to subtract 1 from each y-coordinate.
Reflection
To reflect the quadrilateral in the given line, we will reflect its vertices. Recall that if a point (a,b) is reflected in the y-axis, then its image is (- a, b). With this, let's reflect each vertex of the triangle.
&â–³ R'S'T' && â–³ R''S''T''
&R'(4,0) && R''(-4,0)
&S'(7,2) && S''(-7,2)
&T'(6,3) && T''(-6,3)
Now that we know the reflected vertices, we can plot them and graph the image.
Final Glide Reflection
The final glide reflection is the combined translation and reflection.
