Triangle PQR has vertices P(2, 4), Q(6, 4), and R(6, 1). The triangle is first reflected over the y-axis, then translated 2 units down. What are the coordinates of the final image P'Q'R'?
AP'(−2, 2), Q'(−6, 2), R'(−6, −1)
BP'(−2, 6), Q'(−6, 6), R'(−6, 3)
CP'(2, 2), Q'(6, 2), R'(6, −1)
DP'(−4, 4), Q'(−8, 4), R'(−8, 1)
Explanation
Step 1: Reflect over y-axis → negate x-coordinates: P(2,4)→(−2,4), Q(6,4)→(−6,4), R(6,1)→(−6,1). Step 2: Translate 2 units down → subtract 2 from y-coordinates: P'(−2, 2), Q'(−6, 2), R'(−6, −1).
准备好开始练习了吗？
Free sample questions available. No credit card required.