Answer: The △PQR is reflected across the y-axis and option 2 is correct.
Step-by-step explanation:1. The reflection across the x-axis is defined as
2. The reflection across the y-axis is defined as
3. The reflection across the y=x is defined as
4. The reflection across the y=-x is defined as
It is given that the vertices of △PQR are P(1,1) , Q(−1,−2) , and R(4,−2) . The vertices of △P′Q′R′ are P′(−1,1) , Q′(1,−2) , and R′(−4,−2) .
The relation between prerimage and image is defined as
Therefore the △PQR is reflected across the y-axis and option 2 is correct.
