Sign In
First perform the translation and then the reflection.
Let's recall that a glide reflection is a transformation that is made of a translation followed by a reflection.
| Translation | Reflection |
|---|---|
| Moves every point of a figure the same distance in the same direction. | Uses a mirror line — line of reflection — to reflect a figure. |
Here we are asked to graph â–³ ABC and after the glide reflection. Let's start with a translation.
First, we are asked to translate â–³ ABC 4 units down. To do this, we have to subtract 4 from each y-coordinate.
Next, we are asked to reflect all of the vertices of △ A'B'C' on the opposite side of the y-axis in a way such that the distance from the vertices to the y-axis remains the same. To do so, we need to multiply each x-coordinate by -1. (x,y-4) → ( -x,y-4) Let's perform the reflection.
The final glide reflection is the combined translation and reflection.