From the phrase we can see that the last step is a reflection, and we will only make a translation before it.
If we look at the triangles ΔPQR and ΔP'Q'R', we see that we need a reflection on the x-axis, not the y-axis.
So, we first need to position the triangle with the translation right above the other one.
This will happen when the point Q geos from x = 2 to x = 4, so we need to translate the triangle 2 units to the right.
After this we do the reflection over the x-axis as explained before.
So, the complete phrase is: "Translate 2 unit(s) to the right and then reflect over the x-axis".