When a point (a,b) is reflected in the y-axis, its image is the point (- a,b).
Practice makes perfect
Let's begin by drawing △ ABC.
Next, we will do the transformation
(x,y)→ (x,y+6),
which is a translation of 6 units up. Now we can draw △ A'B'C'.
To complete the glide reflection, we will have to reflect △ A'B'C' in the y-axis. When a point, (a,b) is reflected in the y-axis, its image is the point (- a,b). Now we can complete our glide reflection.
Let's remove the unnecessary parts of the reflection.
