A reflection acrros x-axis followed by a reflection across the y-axis
Step-by-step explanation
Step 1
when reflecting across an axis, the distance of the new image to the axis must be the same, so
transformation 1:
reflection across the x-axis
Step 2
refleciton acrros the y-axis
we can see that after 2 reflections we have the triangle 2, so
the answer is
A reflection acrros x-axis followed by a reflection across the y-axis
I hope this helps you